diff --git a/commands.go b/commands.go
index b21a8ee..f84311c 100644
--- a/commands.go
+++ b/commands.go
@@ -61,7 +61,7 @@ type statefulCmdable struct {
 
 //------------------------------------------------------------------------------
 
-func (c statefulCmdable) Auth(password string) *StatusCmd {
+func (c *statefulCmdable) Auth(password string) *StatusCmd {
 	cmd := NewStatusCmd("auth", password)
 	c.process(cmd)
 	return cmd
@@ -79,11 +79,11 @@ func (c *cmdable) Ping() *StatusCmd {
 	return cmd
 }
 
-func (c cmdable) Quit() *StatusCmd {
+func (c *cmdable) Quit() *StatusCmd {
 	panic("not implemented")
 }
 
-func (c statefulCmdable) Select(index int) *StatusCmd {
+func (c *statefulCmdable) Select(index int) *StatusCmd {
 	cmd := NewStatusCmd("select", index)
 	c.process(cmd)
 	return cmd
@@ -91,7 +91,7 @@ func (c statefulCmdable) Select(index int) *StatusCmd {
 
 //------------------------------------------------------------------------------
 
-func (c cmdable) Del(keys ...string) *IntCmd {
+func (c *cmdable) Del(keys ...string) *IntCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "DEL"
 	for i, key := range keys {
@@ -102,37 +102,37 @@ func (c cmdable) Del(keys ...string) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) Dump(key string) *StringCmd {
+func (c *cmdable) Dump(key string) *StringCmd {
 	cmd := NewStringCmd("dump", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) Exists(key string) *BoolCmd {
+func (c *cmdable) Exists(key string) *BoolCmd {
 	cmd := NewBoolCmd("exists", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) Expire(key string, expiration time.Duration) *BoolCmd {
+func (c *cmdable) Expire(key string, expiration time.Duration) *BoolCmd {
 	cmd := NewBoolCmd("expire", key, formatSec(expiration))
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ExpireAt(key string, tm time.Time) *BoolCmd {
+func (c *cmdable) ExpireAt(key string, tm time.Time) *BoolCmd {
 	cmd := NewBoolCmd("expireat", key, tm.Unix())
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) Keys(pattern string) *StringSliceCmd {
+func (c *cmdable) Keys(pattern string) *StringSliceCmd {
 	cmd := NewStringSliceCmd("keys", pattern)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) Migrate(host, port, key string, db int64, timeout time.Duration) *StatusCmd {
+func (c *cmdable) Migrate(host, port, key string, db int64, timeout time.Duration) *StatusCmd {
 	cmd := NewStatusCmd(
 		"migrate",
 		host,
@@ -146,13 +146,13 @@ func (c cmdable) Migrate(host, port, key string, db int64, timeout time.Duration
 	return cmd
 }
 
-func (c cmdable) Move(key string, db int64) *BoolCmd {
+func (c *cmdable) Move(key string, db int64) *BoolCmd {
 	cmd := NewBoolCmd("move", key, db)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ObjectRefCount(keys ...string) *IntCmd {
+func (c *cmdable) ObjectRefCount(keys ...string) *IntCmd {
 	args := make([]interface{}, 2+len(keys))
 	args[0] = "object"
 	args[1] = "refcount"
@@ -164,7 +164,7 @@ func (c cmdable) ObjectRefCount(keys ...string) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) ObjectEncoding(keys ...string) *StringCmd {
+func (c *cmdable) ObjectEncoding(keys ...string) *StringCmd {
 	args := make([]interface{}, 2+len(keys))
 	args[0] = "object"
 	args[1] = "encoding"
@@ -176,7 +176,7 @@ func (c cmdable) ObjectEncoding(keys ...string) *StringCmd {
 	return cmd
 }
 
-func (c cmdable) ObjectIdleTime(keys ...string) *DurationCmd {
+func (c *cmdable) ObjectIdleTime(keys ...string) *DurationCmd {
 	args := make([]interface{}, 2+len(keys))
 	args[0] = "object"
 	args[1] = "idletime"
@@ -188,19 +188,19 @@ func (c cmdable) ObjectIdleTime(keys ...string) *DurationCmd {
 	return cmd
 }
 
-func (c cmdable) Persist(key string) *BoolCmd {
+func (c *cmdable) Persist(key string) *BoolCmd {
 	cmd := NewBoolCmd("persist", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) PExpire(key string, expiration time.Duration) *BoolCmd {
+func (c *cmdable) PExpire(key string, expiration time.Duration) *BoolCmd {
 	cmd := NewBoolCmd("pexpire", key, formatMs(expiration))
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) PExpireAt(key string, tm time.Time) *BoolCmd {
+func (c *cmdable) PExpireAt(key string, tm time.Time) *BoolCmd {
 	cmd := NewBoolCmd(
 		"pexpireat",
 		key,
@@ -210,31 +210,31 @@ func (c cmdable) PExpireAt(key string, tm time.Time) *BoolCmd {
 	return cmd
 }
 
-func (c cmdable) PTTL(key string) *DurationCmd {
+func (c *cmdable) PTTL(key string) *DurationCmd {
 	cmd := NewDurationCmd(time.Millisecond, "pttl", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) RandomKey() *StringCmd {
+func (c *cmdable) RandomKey() *StringCmd {
 	cmd := NewStringCmd("randomkey")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) Rename(key, newkey string) *StatusCmd {
+func (c *cmdable) Rename(key, newkey string) *StatusCmd {
 	cmd := NewStatusCmd("rename", key, newkey)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) RenameNX(key, newkey string) *BoolCmd {
+func (c *cmdable) RenameNX(key, newkey string) *BoolCmd {
 	cmd := NewBoolCmd("renamenx", key, newkey)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) Restore(key string, ttl time.Duration, value string) *StatusCmd {
+func (c *cmdable) Restore(key string, ttl time.Duration, value string) *StatusCmd {
 	cmd := NewStatusCmd(
 		"restore",
 		key,
@@ -245,7 +245,7 @@ func (c cmdable) Restore(key string, ttl time.Duration, value string) *StatusCmd
 	return cmd
 }
 
-func (c cmdable) RestoreReplace(key string, ttl time.Duration, value string) *StatusCmd {
+func (c *cmdable) RestoreReplace(key string, ttl time.Duration, value string) *StatusCmd {
 	cmd := NewStatusCmd(
 		"restore",
 		key,
@@ -289,31 +289,31 @@ func (sort *Sort) args(key string) []interface{} {
 	return args
 }
 
-func (c cmdable) Sort(key string, sort Sort) *StringSliceCmd {
+func (c *cmdable) Sort(key string, sort Sort) *StringSliceCmd {
 	cmd := NewStringSliceCmd(sort.args(key)...)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) SortInterfaces(key string, sort Sort) *SliceCmd {
+func (c *cmdable) SortInterfaces(key string, sort Sort) *SliceCmd {
 	cmd := NewSliceCmd(sort.args(key)...)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) TTL(key string) *DurationCmd {
+func (c *cmdable) TTL(key string) *DurationCmd {
 	cmd := NewDurationCmd(time.Second, "ttl", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) Type(key string) *StatusCmd {
+func (c *cmdable) Type(key string) *StatusCmd {
 	cmd := NewStatusCmd("type", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) Scan(cursor uint64, match string, count int64) Scanner {
+func (c *cmdable) Scan(cursor uint64, match string, count int64) Scanner {
 	args := []interface{}{"scan", cursor}
 	if match != "" {
 		args = append(args, "match", match)
@@ -329,7 +329,7 @@ func (c cmdable) Scan(cursor uint64, match string, count int64) Scanner {
 	}
 }
 
-func (c cmdable) SScan(key string, cursor uint64, match string, count int64) Scanner {
+func (c *cmdable) SScan(key string, cursor uint64, match string, count int64) Scanner {
 	args := []interface{}{"sscan", key, cursor}
 	if match != "" {
 		args = append(args, "match", match)
@@ -345,7 +345,7 @@ func (c cmdable) SScan(key string, cursor uint64, match string, count int64) Sca
 	}
 }
 
-func (c cmdable) HScan(key string, cursor uint64, match string, count int64) Scanner {
+func (c *cmdable) HScan(key string, cursor uint64, match string, count int64) Scanner {
 	args := []interface{}{"hscan", key, cursor}
 	if match != "" {
 		args = append(args, "match", match)
@@ -361,7 +361,7 @@ func (c cmdable) HScan(key string, cursor uint64, match string, count int64) Sca
 	}
 }
 
-func (c cmdable) ZScan(key string, cursor uint64, match string, count int64) Scanner {
+func (c *cmdable) ZScan(key string, cursor uint64, match string, count int64) Scanner {
 	args := []interface{}{"zscan", key, cursor}
 	if match != "" {
 		args = append(args, "match", match)
@@ -379,7 +379,7 @@ func (c cmdable) ZScan(key string, cursor uint64, match string, count int64) Sca
 
 //------------------------------------------------------------------------------
 
-func (c cmdable) Append(key, value string) *IntCmd {
+func (c *cmdable) Append(key, value string) *IntCmd {
 	cmd := NewIntCmd("append", key, value)
 	c.process(cmd)
 	return cmd
@@ -389,7 +389,7 @@ type BitCount struct {
 	Start, End int64
 }
 
-func (c cmdable) BitCount(key string, bitCount *BitCount) *IntCmd {
+func (c *cmdable) BitCount(key string, bitCount *BitCount) *IntCmd {
 	args := []interface{}{"bitcount", key}
 	if bitCount != nil {
 		args = append(
@@ -403,7 +403,7 @@ func (c cmdable) BitCount(key string, bitCount *BitCount) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) bitOp(op, destKey string, keys ...string) *IntCmd {
+func (c *cmdable) bitOp(op, destKey string, keys ...string) *IntCmd {
 	args := make([]interface{}, 3+len(keys))
 	args[0] = "bitop"
 	args[1] = op
@@ -416,23 +416,23 @@ func (c cmdable) bitOp(op, destKey string, keys ...string) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) BitOpAnd(destKey string, keys ...string) *IntCmd {
+func (c *cmdable) BitOpAnd(destKey string, keys ...string) *IntCmd {
 	return c.bitOp("and", destKey, keys...)
 }
 
-func (c cmdable) BitOpOr(destKey string, keys ...string) *IntCmd {
+func (c *cmdable) BitOpOr(destKey string, keys ...string) *IntCmd {
 	return c.bitOp("or", destKey, keys...)
 }
 
-func (c cmdable) BitOpXor(destKey string, keys ...string) *IntCmd {
+func (c *cmdable) BitOpXor(destKey string, keys ...string) *IntCmd {
 	return c.bitOp("xor", destKey, keys...)
 }
 
-func (c cmdable) BitOpNot(destKey string, key string) *IntCmd {
+func (c *cmdable) BitOpNot(destKey string, key string) *IntCmd {
 	return c.bitOp("not", destKey, key)
 }
 
-func (c cmdable) BitPos(key string, bit int64, pos ...int64) *IntCmd {
+func (c *cmdable) BitPos(key string, bit int64, pos ...int64) *IntCmd {
 	args := make([]interface{}, 3+len(pos))
 	args[0] = "bitpos"
 	args[1] = key
@@ -452,61 +452,61 @@ func (c cmdable) BitPos(key string, bit int64, pos ...int64) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) Decr(key string) *IntCmd {
+func (c *cmdable) Decr(key string) *IntCmd {
 	cmd := NewIntCmd("decr", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) DecrBy(key string, decrement int64) *IntCmd {
+func (c *cmdable) DecrBy(key string, decrement int64) *IntCmd {
 	cmd := NewIntCmd("decrby", key, decrement)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) Get(key string) *StringCmd {
+func (c *cmdable) Get(key string) *StringCmd {
 	cmd := NewStringCmd("get", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) GetBit(key string, offset int64) *IntCmd {
+func (c *cmdable) GetBit(key string, offset int64) *IntCmd {
 	cmd := NewIntCmd("getbit", key, offset)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) GetRange(key string, start, end int64) *StringCmd {
+func (c *cmdable) GetRange(key string, start, end int64) *StringCmd {
 	cmd := NewStringCmd("getrange", key, start, end)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) GetSet(key string, value interface{}) *StringCmd {
+func (c *cmdable) GetSet(key string, value interface{}) *StringCmd {
 	cmd := NewStringCmd("getset", key, value)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) Incr(key string) *IntCmd {
+func (c *cmdable) Incr(key string) *IntCmd {
 	cmd := NewIntCmd("incr", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) IncrBy(key string, value int64) *IntCmd {
+func (c *cmdable) IncrBy(key string, value int64) *IntCmd {
 	cmd := NewIntCmd("incrby", key, value)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) IncrByFloat(key string, value float64) *FloatCmd {
+func (c *cmdable) IncrByFloat(key string, value float64) *FloatCmd {
 	cmd := NewFloatCmd("incrbyfloat", key, value)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) MGet(keys ...string) *SliceCmd {
+func (c *cmdable) MGet(keys ...string) *SliceCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "mget"
 	for i, key := range keys {
@@ -517,7 +517,7 @@ func (c cmdable) MGet(keys ...string) *SliceCmd {
 	return cmd
 }
 
-func (c cmdable) MSet(pairs ...interface{}) *StatusCmd {
+func (c *cmdable) MSet(pairs ...interface{}) *StatusCmd {
 	args := make([]interface{}, 1+len(pairs))
 	args[0] = "mset"
 	for i, pair := range pairs {
@@ -528,7 +528,7 @@ func (c cmdable) MSet(pairs ...interface{}) *StatusCmd {
 	return cmd
 }
 
-func (c cmdable) MSetNX(pairs ...interface{}) *BoolCmd {
+func (c *cmdable) MSetNX(pairs ...interface{}) *BoolCmd {
 	args := make([]interface{}, 1+len(pairs))
 	args[0] = "msetnx"
 	for i, pair := range pairs {
@@ -542,7 +542,7 @@ func (c cmdable) MSetNX(pairs ...interface{}) *BoolCmd {
 // Redis `SET key value [expiration]` command.
 //
 // Zero expiration means the key has no expiration time.
-func (c cmdable) Set(key string, value interface{}, expiration time.Duration) *StatusCmd {
+func (c *cmdable) Set(key string, value interface{}, expiration time.Duration) *StatusCmd {
 	args := make([]interface{}, 3, 4)
 	args[0] = "set"
 	args[1] = key
@@ -559,7 +559,7 @@ func (c cmdable) Set(key string, value interface{}, expiration time.Duration) *S
 	return cmd
 }
 
-func (c cmdable) SetBit(key string, offset int64, value int) *IntCmd {
+func (c *cmdable) SetBit(key string, offset int64, value int) *IntCmd {
 	cmd := NewIntCmd(
 		"SETBIT",
 		key,
@@ -573,7 +573,7 @@ func (c cmdable) SetBit(key string, offset int64, value int) *IntCmd {
 // Redis `SET key value [expiration] NX` command.
 //
 // Zero expiration means the key has no expiration time.
-func (c cmdable) SetNX(key string, value interface{}, expiration time.Duration) *BoolCmd {
+func (c *cmdable) SetNX(key string, value interface{}, expiration time.Duration) *BoolCmd {
 	var cmd *BoolCmd
 	if expiration == 0 {
 		// Use old `SETNX` to support old Redis versions.
@@ -592,7 +592,7 @@ func (c cmdable) SetNX(key string, value interface{}, expiration time.Duration)
 // Redis `SET key value [expiration] XX` command.
 //
 // Zero expiration means the key has no expiration time.
-func (c cmdable) SetXX(key string, value interface{}, expiration time.Duration) *BoolCmd {
+func (c *cmdable) SetXX(key string, value interface{}, expiration time.Duration) *BoolCmd {
 	var cmd *BoolCmd
 	if usePrecise(expiration) {
 		cmd = NewBoolCmd("set", key, value, "px", formatMs(expiration), "xx")
@@ -603,13 +603,13 @@ func (c cmdable) SetXX(key string, value interface{}, expiration time.Duration)
 	return cmd
 }
 
-func (c cmdable) SetRange(key string, offset int64, value string) *IntCmd {
+func (c *cmdable) SetRange(key string, offset int64, value string) *IntCmd {
 	cmd := NewIntCmd("setrange", key, offset, value)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) StrLen(key string) *IntCmd {
+func (c *cmdable) StrLen(key string) *IntCmd {
 	cmd := NewIntCmd("strlen", key)
 	c.process(cmd)
 	return cmd
@@ -617,7 +617,7 @@ func (c cmdable) StrLen(key string) *IntCmd {
 
 //------------------------------------------------------------------------------
 
-func (c cmdable) HDel(key string, fields ...string) *IntCmd {
+func (c *cmdable) HDel(key string, fields ...string) *IntCmd {
 	args := make([]interface{}, 2+len(fields))
 	args[0] = "hdel"
 	args[1] = key
@@ -629,49 +629,49 @@ func (c cmdable) HDel(key string, fields ...string) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) HExists(key, field string) *BoolCmd {
+func (c *cmdable) HExists(key, field string) *BoolCmd {
 	cmd := NewBoolCmd("hexists", key, field)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) HGet(key, field string) *StringCmd {
+func (c *cmdable) HGet(key, field string) *StringCmd {
 	cmd := NewStringCmd("hget", key, field)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) HGetAll(key string) *StringStringMapCmd {
+func (c *cmdable) HGetAll(key string) *StringStringMapCmd {
 	cmd := NewStringStringMapCmd("hgetall", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) HIncrBy(key, field string, incr int64) *IntCmd {
+func (c *cmdable) HIncrBy(key, field string, incr int64) *IntCmd {
 	cmd := NewIntCmd("hincrby", key, field, incr)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) HIncrByFloat(key, field string, incr float64) *FloatCmd {
+func (c *cmdable) HIncrByFloat(key, field string, incr float64) *FloatCmd {
 	cmd := NewFloatCmd("hincrbyfloat", key, field, incr)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) HKeys(key string) *StringSliceCmd {
+func (c *cmdable) HKeys(key string) *StringSliceCmd {
 	cmd := NewStringSliceCmd("hkeys", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) HLen(key string) *IntCmd {
+func (c *cmdable) HLen(key string) *IntCmd {
 	cmd := NewIntCmd("hlen", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) HMGet(key string, fields ...string) *SliceCmd {
+func (c *cmdable) HMGet(key string, fields ...string) *SliceCmd {
 	args := make([]interface{}, 2+len(fields))
 	args[0] = "hmget"
 	args[1] = key
@@ -683,7 +683,7 @@ func (c cmdable) HMGet(key string, fields ...string) *SliceCmd {
 	return cmd
 }
 
-func (c cmdable) HMSet(key string, fields map[string]string) *StatusCmd {
+func (c *cmdable) HMSet(key string, fields map[string]string) *StatusCmd {
 	args := make([]interface{}, 2+len(fields)*2)
 	args[0] = "hmset"
 	args[1] = key
@@ -698,19 +698,19 @@ func (c cmdable) HMSet(key string, fields map[string]string) *StatusCmd {
 	return cmd
 }
 
-func (c cmdable) HSet(key, field, value string) *BoolCmd {
+func (c *cmdable) HSet(key, field, value string) *BoolCmd {
 	cmd := NewBoolCmd("hset", key, field, value)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) HSetNX(key, field, value string) *BoolCmd {
+func (c *cmdable) HSetNX(key, field, value string) *BoolCmd {
 	cmd := NewBoolCmd("hsetnx", key, field, value)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) HVals(key string) *StringSliceCmd {
+func (c *cmdable) HVals(key string) *StringSliceCmd {
 	cmd := NewStringSliceCmd("hvals", key)
 	c.process(cmd)
 	return cmd
@@ -718,7 +718,7 @@ func (c cmdable) HVals(key string) *StringSliceCmd {
 
 //------------------------------------------------------------------------------
 
-func (c cmdable) BLPop(timeout time.Duration, keys ...string) *StringSliceCmd {
+func (c *cmdable) BLPop(timeout time.Duration, keys ...string) *StringSliceCmd {
 	args := make([]interface{}, 1+len(keys)+1)
 	args[0] = "blpop"
 	for i, key := range keys {
@@ -731,7 +731,7 @@ func (c cmdable) BLPop(timeout time.Duration, keys ...string) *StringSliceCmd {
 	return cmd
 }
 
-func (c cmdable) BRPop(timeout time.Duration, keys ...string) *StringSliceCmd {
+func (c *cmdable) BRPop(timeout time.Duration, keys ...string) *StringSliceCmd {
 	args := make([]interface{}, 1+len(keys)+1)
 	args[0] = "brpop"
 	for i, key := range keys {
@@ -744,7 +744,7 @@ func (c cmdable) BRPop(timeout time.Duration, keys ...string) *StringSliceCmd {
 	return cmd
 }
 
-func (c cmdable) BRPopLPush(source, destination string, timeout time.Duration) *StringCmd {
+func (c *cmdable) BRPopLPush(source, destination string, timeout time.Duration) *StringCmd {
 	cmd := NewStringCmd(
 		"brpoplpush",
 		source,
@@ -756,43 +756,43 @@ func (c cmdable) BRPopLPush(source, destination string, timeout time.Duration) *
 	return cmd
 }
 
-func (c cmdable) LIndex(key string, index int64) *StringCmd {
+func (c *cmdable) LIndex(key string, index int64) *StringCmd {
 	cmd := NewStringCmd("lindex", key, index)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) LInsert(key, op string, pivot, value interface{}) *IntCmd {
+func (c *cmdable) LInsert(key, op string, pivot, value interface{}) *IntCmd {
 	cmd := NewIntCmd("linsert", key, op, pivot, value)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) LInsertBefore(key string, pivot, value interface{}) *IntCmd {
+func (c *cmdable) LInsertBefore(key string, pivot, value interface{}) *IntCmd {
 	cmd := NewIntCmd("linsert", key, "before", pivot, value)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) LInsertAfter(key string, pivot, value interface{}) *IntCmd {
+func (c *cmdable) LInsertAfter(key string, pivot, value interface{}) *IntCmd {
 	cmd := NewIntCmd("linsert", key, "after", pivot, value)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) LLen(key string) *IntCmd {
+func (c *cmdable) LLen(key string) *IntCmd {
 	cmd := NewIntCmd("llen", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) LPop(key string) *StringCmd {
+func (c *cmdable) LPop(key string) *StringCmd {
 	cmd := NewStringCmd("lpop", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) LPush(key string, values ...interface{}) *IntCmd {
+func (c *cmdable) LPush(key string, values ...interface{}) *IntCmd {
 	args := make([]interface{}, 2+len(values))
 	args[0] = "lpush"
 	args[1] = key
@@ -804,13 +804,13 @@ func (c cmdable) LPush(key string, values ...interface{}) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) LPushX(key string, value interface{}) *IntCmd {
+func (c *cmdable) LPushX(key string, value interface{}) *IntCmd {
 	cmd := NewIntCmd("lpushx", key, value)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) LRange(key string, start, stop int64) *StringSliceCmd {
+func (c *cmdable) LRange(key string, start, stop int64) *StringSliceCmd {
 	cmd := NewStringSliceCmd(
 		"lrange",
 		key,
@@ -821,19 +821,19 @@ func (c cmdable) LRange(key string, start, stop int64) *StringSliceCmd {
 	return cmd
 }
 
-func (c cmdable) LRem(key string, count int64, value interface{}) *IntCmd {
+func (c *cmdable) LRem(key string, count int64, value interface{}) *IntCmd {
 	cmd := NewIntCmd("lrem", key, count, value)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) LSet(key string, index int64, value interface{}) *StatusCmd {
+func (c *cmdable) LSet(key string, index int64, value interface{}) *StatusCmd {
 	cmd := NewStatusCmd("lset", key, index, value)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) LTrim(key string, start, stop int64) *StatusCmd {
+func (c *cmdable) LTrim(key string, start, stop int64) *StatusCmd {
 	cmd := NewStatusCmd(
 		"ltrim",
 		key,
@@ -844,19 +844,19 @@ func (c cmdable) LTrim(key string, start, stop int64) *StatusCmd {
 	return cmd
 }
 
-func (c cmdable) RPop(key string) *StringCmd {
+func (c *cmdable) RPop(key string) *StringCmd {
 	cmd := NewStringCmd("rpop", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) RPopLPush(source, destination string) *StringCmd {
+func (c *cmdable) RPopLPush(source, destination string) *StringCmd {
 	cmd := NewStringCmd("rpoplpush", source, destination)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) RPush(key string, values ...interface{}) *IntCmd {
+func (c *cmdable) RPush(key string, values ...interface{}) *IntCmd {
 	args := make([]interface{}, 2+len(values))
 	args[0] = "rpush"
 	args[1] = key
@@ -868,7 +868,7 @@ func (c cmdable) RPush(key string, values ...interface{}) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) RPushX(key string, value interface{}) *IntCmd {
+func (c *cmdable) RPushX(key string, value interface{}) *IntCmd {
 	cmd := NewIntCmd("rpushx", key, value)
 	c.process(cmd)
 	return cmd
@@ -876,7 +876,7 @@ func (c cmdable) RPushX(key string, value interface{}) *IntCmd {
 
 //------------------------------------------------------------------------------
 
-func (c cmdable) SAdd(key string, members ...interface{}) *IntCmd {
+func (c *cmdable) SAdd(key string, members ...interface{}) *IntCmd {
 	args := make([]interface{}, 2+len(members))
 	args[0] = "sadd"
 	args[1] = key
@@ -888,13 +888,13 @@ func (c cmdable) SAdd(key string, members ...interface{}) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) SCard(key string) *IntCmd {
+func (c *cmdable) SCard(key string) *IntCmd {
 	cmd := NewIntCmd("scard", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) SDiff(keys ...string) *StringSliceCmd {
+func (c *cmdable) SDiff(keys ...string) *StringSliceCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "sdiff"
 	for i, key := range keys {
@@ -905,7 +905,7 @@ func (c cmdable) SDiff(keys ...string) *StringSliceCmd {
 	return cmd
 }
 
-func (c cmdable) SDiffStore(destination string, keys ...string) *IntCmd {
+func (c *cmdable) SDiffStore(destination string, keys ...string) *IntCmd {
 	args := make([]interface{}, 2+len(keys))
 	args[0] = "sdiffstore"
 	args[1] = destination
@@ -917,7 +917,7 @@ func (c cmdable) SDiffStore(destination string, keys ...string) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) SInter(keys ...string) *StringSliceCmd {
+func (c *cmdable) SInter(keys ...string) *StringSliceCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "sinter"
 	for i, key := range keys {
@@ -928,7 +928,7 @@ func (c cmdable) SInter(keys ...string) *StringSliceCmd {
 	return cmd
 }
 
-func (c cmdable) SInterStore(destination string, keys ...string) *IntCmd {
+func (c *cmdable) SInterStore(destination string, keys ...string) *IntCmd {
 	args := make([]interface{}, 2+len(keys))
 	args[0] = "sinterstore"
 	args[1] = destination
@@ -940,53 +940,53 @@ func (c cmdable) SInterStore(destination string, keys ...string) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) SIsMember(key string, member interface{}) *BoolCmd {
+func (c *cmdable) SIsMember(key string, member interface{}) *BoolCmd {
 	cmd := NewBoolCmd("sismember", key, member)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) SMembers(key string) *StringSliceCmd {
+func (c *cmdable) SMembers(key string) *StringSliceCmd {
 	cmd := NewStringSliceCmd("smembers", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) SMove(source, destination string, member interface{}) *BoolCmd {
+func (c *cmdable) SMove(source, destination string, member interface{}) *BoolCmd {
 	cmd := NewBoolCmd("smove", source, destination, member)
 	c.process(cmd)
 	return cmd
 }
 
 // Redis `SPOP key` command.
-func (c cmdable) SPop(key string) *StringCmd {
+func (c *cmdable) SPop(key string) *StringCmd {
 	cmd := NewStringCmd("spop", key)
 	c.process(cmd)
 	return cmd
 }
 
 // Redis `SPOP key count` command.
-func (c cmdable) SPopN(key string, count int64) *StringSliceCmd {
+func (c *cmdable) SPopN(key string, count int64) *StringSliceCmd {
 	cmd := NewStringSliceCmd("spop", key, count)
 	c.process(cmd)
 	return cmd
 }
 
 // Redis `SRANDMEMBER key` command.
-func (c cmdable) SRandMember(key string) *StringCmd {
+func (c *cmdable) SRandMember(key string) *StringCmd {
 	cmd := NewStringCmd("srandmember", key)
 	c.process(cmd)
 	return cmd
 }
 
 // Redis `SRANDMEMBER key count` command.
-func (c cmdable) SRandMemberN(key string, count int64) *StringSliceCmd {
+func (c *cmdable) SRandMemberN(key string, count int64) *StringSliceCmd {
 	cmd := NewStringSliceCmd("srandmember", key, count)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) SRem(key string, members ...interface{}) *IntCmd {
+func (c *cmdable) SRem(key string, members ...interface{}) *IntCmd {
 	args := make([]interface{}, 2+len(members))
 	args[0] = "srem"
 	args[1] = key
@@ -998,7 +998,7 @@ func (c cmdable) SRem(key string, members ...interface{}) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) SUnion(keys ...string) *StringSliceCmd {
+func (c *cmdable) SUnion(keys ...string) *StringSliceCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "sunion"
 	for i, key := range keys {
@@ -1009,7 +1009,7 @@ func (c cmdable) SUnion(keys ...string) *StringSliceCmd {
 	return cmd
 }
 
-func (c cmdable) SUnionStore(destination string, keys ...string) *IntCmd {
+func (c *cmdable) SUnionStore(destination string, keys ...string) *IntCmd {
 	args := make([]interface{}, 2+len(keys))
 	args[0] = "sunionstore"
 	args[1] = destination
@@ -1036,7 +1036,7 @@ type ZStore struct {
 	Aggregate string
 }
 
-func (c cmdable) zAdd(a []interface{}, n int, members ...Z) *IntCmd {
+func (c *cmdable) zAdd(a []interface{}, n int, members ...Z) *IntCmd {
 	for i, m := range members {
 		a[n+2*i] = m.Score
 		a[n+2*i+1] = m.Member
@@ -1047,7 +1047,7 @@ func (c cmdable) zAdd(a []interface{}, n int, members ...Z) *IntCmd {
 }
 
 // Redis `ZADD key score member [score member ...]` command.
-func (c cmdable) ZAdd(key string, members ...Z) *IntCmd {
+func (c *cmdable) ZAdd(key string, members ...Z) *IntCmd {
 	const n = 2
 	a := make([]interface{}, n+2*len(members))
 	a[0], a[1] = "zadd", key
@@ -1055,7 +1055,7 @@ func (c cmdable) ZAdd(key string, members ...Z) *IntCmd {
 }
 
 // Redis `ZADD key NX score member [score member ...]` command.
-func (c cmdable) ZAddNX(key string, members ...Z) *IntCmd {
+func (c *cmdable) ZAddNX(key string, members ...Z) *IntCmd {
 	const n = 3
 	a := make([]interface{}, n+2*len(members))
 	a[0], a[1], a[2] = "zadd", key, "nx"
@@ -1063,7 +1063,7 @@ func (c cmdable) ZAddNX(key string, members ...Z) *IntCmd {
 }
 
 // Redis `ZADD key XX score member [score member ...]` command.
-func (c cmdable) ZAddXX(key string, members ...Z) *IntCmd {
+func (c *cmdable) ZAddXX(key string, members ...Z) *IntCmd {
 	const n = 3
 	a := make([]interface{}, n+2*len(members))
 	a[0], a[1], a[2] = "zadd", key, "xx"
@@ -1071,7 +1071,7 @@ func (c cmdable) ZAddXX(key string, members ...Z) *IntCmd {
 }
 
 // Redis `ZADD key CH score member [score member ...]` command.
-func (c cmdable) ZAddCh(key string, members ...Z) *IntCmd {
+func (c *cmdable) ZAddCh(key string, members ...Z) *IntCmd {
 	const n = 3
 	a := make([]interface{}, n+2*len(members))
 	a[0], a[1], a[2] = "zadd", key, "ch"
@@ -1079,7 +1079,7 @@ func (c cmdable) ZAddCh(key string, members ...Z) *IntCmd {
 }
 
 // Redis `ZADD key NX CH score member [score member ...]` command.
-func (c cmdable) ZAddNXCh(key string, members ...Z) *IntCmd {
+func (c *cmdable) ZAddNXCh(key string, members ...Z) *IntCmd {
 	const n = 4
 	a := make([]interface{}, n+2*len(members))
 	a[0], a[1], a[2], a[3] = "zadd", key, "nx", "ch"
@@ -1087,14 +1087,14 @@ func (c cmdable) ZAddNXCh(key string, members ...Z) *IntCmd {
 }
 
 // Redis `ZADD key XX CH score member [score member ...]` command.
-func (c cmdable) ZAddXXCh(key string, members ...Z) *IntCmd {
+func (c *cmdable) ZAddXXCh(key string, members ...Z) *IntCmd {
 	const n = 4
 	a := make([]interface{}, n+2*len(members))
 	a[0], a[1], a[2], a[3] = "zadd", key, "xx", "ch"
 	return c.zAdd(a, n, members...)
 }
 
-func (c cmdable) zIncr(a []interface{}, n int, members ...Z) *FloatCmd {
+func (c *cmdable) zIncr(a []interface{}, n int, members ...Z) *FloatCmd {
 	for i, m := range members {
 		a[n+2*i] = m.Score
 		a[n+2*i+1] = m.Member
@@ -1105,7 +1105,7 @@ func (c cmdable) zIncr(a []interface{}, n int, members ...Z) *FloatCmd {
 }
 
 // Redis `ZADD key INCR score member` command.
-func (c cmdable) ZIncr(key string, member Z) *FloatCmd {
+func (c *cmdable) ZIncr(key string, member Z) *FloatCmd {
 	const n = 3
 	a := make([]interface{}, n+2)
 	a[0], a[1], a[2] = "zadd", key, "incr"
@@ -1113,7 +1113,7 @@ func (c cmdable) ZIncr(key string, member Z) *FloatCmd {
 }
 
 // Redis `ZADD key NX INCR score member` command.
-func (c cmdable) ZIncrNX(key string, member Z) *FloatCmd {
+func (c *cmdable) ZIncrNX(key string, member Z) *FloatCmd {
 	const n = 4
 	a := make([]interface{}, n+2)
 	a[0], a[1], a[2], a[3] = "zadd", key, "incr", "nx"
@@ -1121,32 +1121,32 @@ func (c cmdable) ZIncrNX(key string, member Z) *FloatCmd {
 }
 
 // Redis `ZADD key XX INCR score member` command.
-func (c cmdable) ZIncrXX(key string, member Z) *FloatCmd {
+func (c *cmdable) ZIncrXX(key string, member Z) *FloatCmd {
 	const n = 4
 	a := make([]interface{}, n+2)
 	a[0], a[1], a[2], a[3] = "zadd", key, "incr", "xx"
 	return c.zIncr(a, n, member)
 }
 
-func (c cmdable) ZCard(key string) *IntCmd {
+func (c *cmdable) ZCard(key string) *IntCmd {
 	cmd := NewIntCmd("zcard", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ZCount(key, min, max string) *IntCmd {
+func (c *cmdable) ZCount(key, min, max string) *IntCmd {
 	cmd := NewIntCmd("zcount", key, min, max)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ZIncrBy(key string, increment float64, member string) *FloatCmd {
+func (c *cmdable) ZIncrBy(key string, increment float64, member string) *FloatCmd {
 	cmd := NewFloatCmd("zincrby", key, increment, member)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ZInterStore(destination string, store ZStore, keys ...string) *IntCmd {
+func (c *cmdable) ZInterStore(destination string, store ZStore, keys ...string) *IntCmd {
 	args := make([]interface{}, 3+len(keys))
 	args[0] = "zinterstore"
 	args[1] = destination
@@ -1168,7 +1168,7 @@ func (c cmdable) ZInterStore(destination string, store ZStore, keys ...string) *
 	return cmd
 }
 
-func (c cmdable) zRange(key string, start, stop int64, withScores bool) *StringSliceCmd {
+func (c *cmdable) zRange(key string, start, stop int64, withScores bool) *StringSliceCmd {
 	args := []interface{}{
 		"zrange",
 		key,
@@ -1183,11 +1183,11 @@ func (c cmdable) zRange(key string, start, stop int64, withScores bool) *StringS
 	return cmd
 }
 
-func (c cmdable) ZRange(key string, start, stop int64) *StringSliceCmd {
+func (c *cmdable) ZRange(key string, start, stop int64) *StringSliceCmd {
 	return c.zRange(key, start, stop, false)
 }
 
-func (c cmdable) ZRangeWithScores(key string, start, stop int64) *ZSliceCmd {
+func (c *cmdable) ZRangeWithScores(key string, start, stop int64) *ZSliceCmd {
 	cmd := NewZSliceCmd("zrange", key, start, stop, "withscores")
 	c.process(cmd)
 	return cmd
@@ -1198,7 +1198,7 @@ type ZRangeBy struct {
 	Offset, Count int64
 }
 
-func (c cmdable) zRangeBy(zcmd, key string, opt ZRangeBy, withScores bool) *StringSliceCmd {
+func (c *cmdable) zRangeBy(zcmd, key string, opt ZRangeBy, withScores bool) *StringSliceCmd {
 	args := []interface{}{zcmd, key, opt.Min, opt.Max}
 	if withScores {
 		args = append(args, "withscores")
@@ -1216,15 +1216,15 @@ func (c cmdable) zRangeBy(zcmd, key string, opt ZRangeBy, withScores bool) *Stri
 	return cmd
 }
 
-func (c cmdable) ZRangeByScore(key string, opt ZRangeBy) *StringSliceCmd {
+func (c *cmdable) ZRangeByScore(key string, opt ZRangeBy) *StringSliceCmd {
 	return c.zRangeBy("zrangebyscore", key, opt, false)
 }
 
-func (c cmdable) ZRangeByLex(key string, opt ZRangeBy) *StringSliceCmd {
+func (c *cmdable) ZRangeByLex(key string, opt ZRangeBy) *StringSliceCmd {
 	return c.zRangeBy("zrangebylex", key, opt, false)
 }
 
-func (c cmdable) ZRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd {
+func (c *cmdable) ZRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd {
 	args := []interface{}{"zrangebyscore", key, opt.Min, opt.Max, "withscores"}
 	if opt.Offset != 0 || opt.Count != 0 {
 		args = append(
@@ -1239,13 +1239,13 @@ func (c cmdable) ZRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd {
 	return cmd
 }
 
-func (c cmdable) ZRank(key, member string) *IntCmd {
+func (c *cmdable) ZRank(key, member string) *IntCmd {
 	cmd := NewIntCmd("zrank", key, member)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ZRem(key string, members ...interface{}) *IntCmd {
+func (c *cmdable) ZRem(key string, members ...interface{}) *IntCmd {
 	args := make([]interface{}, 2+len(members))
 	args[0] = "zrem"
 	args[1] = key
@@ -1257,7 +1257,7 @@ func (c cmdable) ZRem(key string, members ...interface{}) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) ZRemRangeByRank(key string, start, stop int64) *IntCmd {
+func (c *cmdable) ZRemRangeByRank(key string, start, stop int64) *IntCmd {
 	cmd := NewIntCmd(
 		"zremrangebyrank",
 		key,
@@ -1268,25 +1268,25 @@ func (c cmdable) ZRemRangeByRank(key string, start, stop int64) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) ZRemRangeByScore(key, min, max string) *IntCmd {
+func (c *cmdable) ZRemRangeByScore(key, min, max string) *IntCmd {
 	cmd := NewIntCmd("zremrangebyscore", key, min, max)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ZRevRange(key string, start, stop int64) *StringSliceCmd {
+func (c *cmdable) ZRevRange(key string, start, stop int64) *StringSliceCmd {
 	cmd := NewStringSliceCmd("zrevrange", key, start, stop)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ZRevRangeWithScores(key string, start, stop int64) *ZSliceCmd {
+func (c *cmdable) ZRevRangeWithScores(key string, start, stop int64) *ZSliceCmd {
 	cmd := NewZSliceCmd("zrevrange", key, start, stop, "withscores")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) zRevRangeBy(zcmd, key string, opt ZRangeBy) *StringSliceCmd {
+func (c *cmdable) zRevRangeBy(zcmd, key string, opt ZRangeBy) *StringSliceCmd {
 	args := []interface{}{zcmd, key, opt.Max, opt.Min}
 	if opt.Offset != 0 || opt.Count != 0 {
 		args = append(
@@ -1301,15 +1301,15 @@ func (c cmdable) zRevRangeBy(zcmd, key string, opt ZRangeBy) *StringSliceCmd {
 	return cmd
 }
 
-func (c cmdable) ZRevRangeByScore(key string, opt ZRangeBy) *StringSliceCmd {
+func (c *cmdable) ZRevRangeByScore(key string, opt ZRangeBy) *StringSliceCmd {
 	return c.zRevRangeBy("zrevrangebyscore", key, opt)
 }
 
-func (c cmdable) ZRevRangeByLex(key string, opt ZRangeBy) *StringSliceCmd {
+func (c *cmdable) ZRevRangeByLex(key string, opt ZRangeBy) *StringSliceCmd {
 	return c.zRevRangeBy("zrevrangebylex", key, opt)
 }
 
-func (c cmdable) ZRevRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd {
+func (c *cmdable) ZRevRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd {
 	args := []interface{}{"zrevrangebyscore", key, opt.Max, opt.Min, "withscores"}
 	if opt.Offset != 0 || opt.Count != 0 {
 		args = append(
@@ -1324,19 +1324,19 @@ func (c cmdable) ZRevRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd
 	return cmd
 }
 
-func (c cmdable) ZRevRank(key, member string) *IntCmd {
+func (c *cmdable) ZRevRank(key, member string) *IntCmd {
 	cmd := NewIntCmd("zrevrank", key, member)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ZScore(key, member string) *FloatCmd {
+func (c *cmdable) ZScore(key, member string) *FloatCmd {
 	cmd := NewFloatCmd("zscore", key, member)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ZUnionStore(dest string, store ZStore, keys ...string) *IntCmd {
+func (c *cmdable) ZUnionStore(dest string, store ZStore, keys ...string) *IntCmd {
 	args := make([]interface{}, 3+len(keys))
 	args[0] = "zunionstore"
 	args[1] = dest
@@ -1360,7 +1360,7 @@ func (c cmdable) ZUnionStore(dest string, store ZStore, keys ...string) *IntCmd
 
 //------------------------------------------------------------------------------
 
-func (c cmdable) PFAdd(key string, els ...interface{}) *IntCmd {
+func (c *cmdable) PFAdd(key string, els ...interface{}) *IntCmd {
 	args := make([]interface{}, 2+len(els))
 	args[0] = "pfadd"
 	args[1] = key
@@ -1372,7 +1372,7 @@ func (c cmdable) PFAdd(key string, els ...interface{}) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) PFCount(keys ...string) *IntCmd {
+func (c *cmdable) PFCount(keys ...string) *IntCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "pfcount"
 	for i, key := range keys {
@@ -1383,7 +1383,7 @@ func (c cmdable) PFCount(keys ...string) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) PFMerge(dest string, keys ...string) *StatusCmd {
+func (c *cmdable) PFMerge(dest string, keys ...string) *StatusCmd {
 	args := make([]interface{}, 2+len(keys))
 	args[0] = "pfmerge"
 	args[1] = dest
@@ -1397,38 +1397,38 @@ func (c cmdable) PFMerge(dest string, keys ...string) *StatusCmd {
 
 //------------------------------------------------------------------------------
 
-func (c cmdable) BgRewriteAOF() *StatusCmd {
+func (c *cmdable) BgRewriteAOF() *StatusCmd {
 	cmd := NewStatusCmd("bgrewriteaof")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) BgSave() *StatusCmd {
+func (c *cmdable) BgSave() *StatusCmd {
 	cmd := NewStatusCmd("bgsave")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClientKill(ipPort string) *StatusCmd {
+func (c *cmdable) ClientKill(ipPort string) *StatusCmd {
 	cmd := NewStatusCmd("client", "kill", ipPort)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClientList() *StringCmd {
+func (c *cmdable) ClientList() *StringCmd {
 	cmd := NewStringCmd("client", "list")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClientPause(dur time.Duration) *BoolCmd {
+func (c *cmdable) ClientPause(dur time.Duration) *BoolCmd {
 	cmd := NewBoolCmd("client", "pause", formatMs(dur))
 	c.process(cmd)
 	return cmd
 }
 
 // ClientSetName assigns a name to the one of many connections in the pool.
-func (c cmdable) ClientSetName(name string) *BoolCmd {
+func (c *cmdable) ClientSetName(name string) *BoolCmd {
 	cmd := NewBoolCmd("client", "setname", name)
 	c.process(cmd)
 	return cmd
@@ -1441,43 +1441,43 @@ func (c *Client) ClientGetName() *StringCmd {
 	return cmd
 }
 
-func (c cmdable) ConfigGet(parameter string) *SliceCmd {
+func (c *cmdable) ConfigGet(parameter string) *SliceCmd {
 	cmd := NewSliceCmd("config", "get", parameter)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ConfigResetStat() *StatusCmd {
+func (c *cmdable) ConfigResetStat() *StatusCmd {
 	cmd := NewStatusCmd("config", "resetstat")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ConfigSet(parameter, value string) *StatusCmd {
+func (c *cmdable) ConfigSet(parameter, value string) *StatusCmd {
 	cmd := NewStatusCmd("config", "set", parameter, value)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) DbSize() *IntCmd {
+func (c *cmdable) DbSize() *IntCmd {
 	cmd := NewIntCmd("dbsize")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) FlushAll() *StatusCmd {
+func (c *cmdable) FlushAll() *StatusCmd {
 	cmd := NewStatusCmd("flushall")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) FlushDb() *StatusCmd {
+func (c *cmdable) FlushDb() *StatusCmd {
 	cmd := NewStatusCmd("flushdb")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) Info(section ...string) *StringCmd {
+func (c *cmdable) Info(section ...string) *StringCmd {
 	args := []interface{}{"info"}
 	if len(section) > 0 {
 		args = append(args, section[0])
@@ -1487,19 +1487,19 @@ func (c cmdable) Info(section ...string) *StringCmd {
 	return cmd
 }
 
-func (c cmdable) LastSave() *IntCmd {
+func (c *cmdable) LastSave() *IntCmd {
 	cmd := NewIntCmd("lastsave")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) Save() *StatusCmd {
+func (c *cmdable) Save() *StatusCmd {
 	cmd := NewStatusCmd("save")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) shutdown(modifier string) *StatusCmd {
+func (c *cmdable) shutdown(modifier string) *StatusCmd {
 	var args []interface{}
 	if modifier == "" {
 		args = []interface{}{"shutdown"}
@@ -1521,33 +1521,33 @@ func (c cmdable) shutdown(modifier string) *StatusCmd {
 	return cmd
 }
 
-func (c cmdable) Shutdown() *StatusCmd {
+func (c *cmdable) Shutdown() *StatusCmd {
 	return c.shutdown("")
 }
 
-func (c cmdable) ShutdownSave() *StatusCmd {
+func (c *cmdable) ShutdownSave() *StatusCmd {
 	return c.shutdown("save")
 }
 
-func (c cmdable) ShutdownNoSave() *StatusCmd {
+func (c *cmdable) ShutdownNoSave() *StatusCmd {
 	return c.shutdown("nosave")
 }
 
-func (c cmdable) SlaveOf(host, port string) *StatusCmd {
+func (c *cmdable) SlaveOf(host, port string) *StatusCmd {
 	cmd := NewStatusCmd("slaveof", host, port)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) SlowLog() {
+func (c *cmdable) SlowLog() {
 	panic("not implemented")
 }
 
-func (c cmdable) Sync() {
+func (c *cmdable) Sync() {
 	panic("not implemented")
 }
 
-func (c cmdable) Time() *StringSliceCmd {
+func (c *cmdable) Time() *StringSliceCmd {
 	cmd := NewStringSliceCmd("time")
 	c.process(cmd)
 	return cmd
@@ -1555,7 +1555,7 @@ func (c cmdable) Time() *StringSliceCmd {
 
 //------------------------------------------------------------------------------
 
-func (c cmdable) Eval(script string, keys []string, args ...interface{}) *Cmd {
+func (c *cmdable) Eval(script string, keys []string, args ...interface{}) *Cmd {
 	cmdArgs := make([]interface{}, 3+len(keys)+len(args))
 	cmdArgs[0] = "eval"
 	cmdArgs[1] = script
@@ -1572,7 +1572,7 @@ func (c cmdable) Eval(script string, keys []string, args ...interface{}) *Cmd {
 	return cmd
 }
 
-func (c cmdable) EvalSha(sha1 string, keys []string, args ...interface{}) *Cmd {
+func (c *cmdable) EvalSha(sha1 string, keys []string, args ...interface{}) *Cmd {
 	cmdArgs := make([]interface{}, 3+len(keys)+len(args))
 	cmdArgs[0] = "evalsha"
 	cmdArgs[1] = sha1
@@ -1589,7 +1589,7 @@ func (c cmdable) EvalSha(sha1 string, keys []string, args ...interface{}) *Cmd {
 	return cmd
 }
 
-func (c cmdable) ScriptExists(scripts ...string) *BoolSliceCmd {
+func (c *cmdable) ScriptExists(scripts ...string) *BoolSliceCmd {
 	args := make([]interface{}, 2+len(scripts))
 	args[0] = "script"
 	args[1] = "exists"
@@ -1601,19 +1601,19 @@ func (c cmdable) ScriptExists(scripts ...string) *BoolSliceCmd {
 	return cmd
 }
 
-func (c cmdable) ScriptFlush() *StatusCmd {
+func (c *cmdable) ScriptFlush() *StatusCmd {
 	cmd := NewStatusCmd("script", "flush")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ScriptKill() *StatusCmd {
+func (c *cmdable) ScriptKill() *StatusCmd {
 	cmd := NewStatusCmd("script", "kill")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ScriptLoad(script string) *StringCmd {
+func (c *cmdable) ScriptLoad(script string) *StringCmd {
 	cmd := NewStringCmd("script", "load", script)
 	c.process(cmd)
 	return cmd
@@ -1621,7 +1621,7 @@ func (c cmdable) ScriptLoad(script string) *StringCmd {
 
 //------------------------------------------------------------------------------
 
-func (c cmdable) DebugObject(key string) *StringCmd {
+func (c *cmdable) DebugObject(key string) *StringCmd {
 	cmd := NewStringCmd("debug", "object", key)
 	c.process(cmd)
 	return cmd
@@ -1629,7 +1629,7 @@ func (c cmdable) DebugObject(key string) *StringCmd {
 
 //------------------------------------------------------------------------------
 
-func (c cmdable) PubSubChannels(pattern string) *StringSliceCmd {
+func (c *cmdable) PubSubChannels(pattern string) *StringSliceCmd {
 	args := []interface{}{"pubsub", "channels"}
 	if pattern != "*" {
 		args = append(args, pattern)
@@ -1639,7 +1639,7 @@ func (c cmdable) PubSubChannels(pattern string) *StringSliceCmd {
 	return cmd
 }
 
-func (c cmdable) PubSubNumSub(channels ...string) *StringIntMapCmd {
+func (c *cmdable) PubSubNumSub(channels ...string) *StringIntMapCmd {
 	args := make([]interface{}, 2+len(channels))
 	args[0] = "pubsub"
 	args[1] = "numsub"
@@ -1651,7 +1651,7 @@ func (c cmdable) PubSubNumSub(channels ...string) *StringIntMapCmd {
 	return cmd
 }
 
-func (c cmdable) PubSubNumPat() *IntCmd {
+func (c *cmdable) PubSubNumPat() *IntCmd {
 	cmd := NewIntCmd("pubsub", "numpat")
 	c.process(cmd)
 	return cmd
@@ -1659,73 +1659,73 @@ func (c cmdable) PubSubNumPat() *IntCmd {
 
 //------------------------------------------------------------------------------
 
-func (c cmdable) ClusterSlots() *ClusterSlotsCmd {
+func (c *cmdable) ClusterSlots() *ClusterSlotsCmd {
 	cmd := NewClusterSlotsCmd("cluster", "slots")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClusterNodes() *StringCmd {
+func (c *cmdable) ClusterNodes() *StringCmd {
 	cmd := NewStringCmd("cluster", "nodes")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClusterMeet(host, port string) *StatusCmd {
+func (c *cmdable) ClusterMeet(host, port string) *StatusCmd {
 	cmd := NewStatusCmd("cluster", "meet", host, port)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClusterForget(nodeID string) *StatusCmd {
+func (c *cmdable) ClusterForget(nodeID string) *StatusCmd {
 	cmd := NewStatusCmd("cluster", "forget", nodeID)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClusterReplicate(nodeID string) *StatusCmd {
+func (c *cmdable) ClusterReplicate(nodeID string) *StatusCmd {
 	cmd := NewStatusCmd("cluster", "replicate", nodeID)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClusterResetSoft() *StatusCmd {
+func (c *cmdable) ClusterResetSoft() *StatusCmd {
 	cmd := NewStatusCmd("cluster", "reset", "soft")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClusterResetHard() *StatusCmd {
+func (c *cmdable) ClusterResetHard() *StatusCmd {
 	cmd := NewStatusCmd("cluster", "reset", "hard")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClusterInfo() *StringCmd {
+func (c *cmdable) ClusterInfo() *StringCmd {
 	cmd := NewStringCmd("cluster", "info")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClusterKeySlot(key string) *IntCmd {
+func (c *cmdable) ClusterKeySlot(key string) *IntCmd {
 	cmd := NewIntCmd("cluster", "keyslot", key)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClusterCountFailureReports(nodeID string) *IntCmd {
+func (c *cmdable) ClusterCountFailureReports(nodeID string) *IntCmd {
 	cmd := NewIntCmd("cluster", "count-failure-reports", nodeID)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClusterCountKeysInSlot(slot int) *IntCmd {
+func (c *cmdable) ClusterCountKeysInSlot(slot int) *IntCmd {
 	cmd := NewIntCmd("cluster", "countkeysinslot", slot)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClusterDelSlots(slots ...int) *StatusCmd {
+func (c *cmdable) ClusterDelSlots(slots ...int) *StatusCmd {
 	args := make([]interface{}, 2+len(slots))
 	args[0] = "cluster"
 	args[1] = "delslots"
@@ -1737,7 +1737,7 @@ func (c cmdable) ClusterDelSlots(slots ...int) *StatusCmd {
 	return cmd
 }
 
-func (c cmdable) ClusterDelSlotsRange(min, max int) *StatusCmd {
+func (c *cmdable) ClusterDelSlotsRange(min, max int) *StatusCmd {
 	size := max - min + 1
 	slots := make([]int, size)
 	for i := 0; i < size; i++ {
@@ -1746,37 +1746,37 @@ func (c cmdable) ClusterDelSlotsRange(min, max int) *StatusCmd {
 	return c.ClusterDelSlots(slots...)
 }
 
-func (c cmdable) ClusterSaveConfig() *StatusCmd {
+func (c *cmdable) ClusterSaveConfig() *StatusCmd {
 	cmd := NewStatusCmd("cluster", "saveconfig")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClusterSlaves(nodeID string) *StringSliceCmd {
+func (c *cmdable) ClusterSlaves(nodeID string) *StringSliceCmd {
 	cmd := NewStringSliceCmd("cluster", "slaves", nodeID)
 	c.process(cmd)
 	return cmd
 }
 
-func (c statefulCmdable) ReadOnly() *StatusCmd {
+func (c *statefulCmdable) ReadOnly() *StatusCmd {
 	cmd := NewStatusCmd("readonly")
 	c.process(cmd)
 	return cmd
 }
 
-func (c statefulCmdable) ReadWrite() *StatusCmd {
+func (c *statefulCmdable) ReadWrite() *StatusCmd {
 	cmd := NewStatusCmd("readwrite")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClusterFailover() *StatusCmd {
+func (c *cmdable) ClusterFailover() *StatusCmd {
 	cmd := NewStatusCmd("cluster", "failover")
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) ClusterAddSlots(slots ...int) *StatusCmd {
+func (c *cmdable) ClusterAddSlots(slots ...int) *StatusCmd {
 	args := make([]interface{}, 2+len(slots))
 	args[0] = "cluster"
 	args[1] = "addslots"
@@ -1788,7 +1788,7 @@ func (c cmdable) ClusterAddSlots(slots ...int) *StatusCmd {
 	return cmd
 }
 
-func (c cmdable) ClusterAddSlotsRange(min, max int) *StatusCmd {
+func (c *cmdable) ClusterAddSlotsRange(min, max int) *StatusCmd {
 	size := max - min + 1
 	slots := make([]int, size)
 	for i := 0; i < size; i++ {
@@ -1799,7 +1799,7 @@ func (c cmdable) ClusterAddSlotsRange(min, max int) *StatusCmd {
 
 //------------------------------------------------------------------------------
 
-func (c cmdable) GeoAdd(key string, geoLocation ...*GeoLocation) *IntCmd {
+func (c *cmdable) GeoAdd(key string, geoLocation ...*GeoLocation) *IntCmd {
 	args := make([]interface{}, 2+3*len(geoLocation))
 	args[0] = "geoadd"
 	args[1] = key
@@ -1813,19 +1813,19 @@ func (c cmdable) GeoAdd(key string, geoLocation ...*GeoLocation) *IntCmd {
 	return cmd
 }
 
-func (c cmdable) GeoRadius(key string, longitude, latitude float64, query *GeoRadiusQuery) *GeoLocationCmd {
+func (c *cmdable) GeoRadius(key string, longitude, latitude float64, query *GeoRadiusQuery) *GeoLocationCmd {
 	cmd := NewGeoLocationCmd(query, "georadius", key, longitude, latitude)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) GeoRadiusByMember(key, member string, query *GeoRadiusQuery) *GeoLocationCmd {
+func (c *cmdable) GeoRadiusByMember(key, member string, query *GeoRadiusQuery) *GeoLocationCmd {
 	cmd := NewGeoLocationCmd(query, "georadiusbymember", key, member)
 	c.process(cmd)
 	return cmd
 }
 
-func (c cmdable) GeoDist(key string, member1, member2, unit string) *FloatCmd {
+func (c *cmdable) GeoDist(key string, member1, member2, unit string) *FloatCmd {
 	if unit == "" {
 		unit = "km"
 	}
@@ -1834,7 +1834,7 @@ func (c cmdable) GeoDist(key string, member1, member2, unit string) *FloatCmd {
 	return cmd
 }
 
-func (c cmdable) GeoHash(key string, members ...string) *StringSliceCmd {
+func (c *cmdable) GeoHash(key string, members ...string) *StringSliceCmd {
 	args := make([]interface{}, 2+len(members))
 	args[0] = "geohash"
 	args[1] = key
@@ -1848,7 +1848,7 @@ func (c cmdable) GeoHash(key string, members ...string) *StringSliceCmd {
 
 //------------------------------------------------------------------------------
 
-func (c cmdable) Command() *CommandsInfoCmd {
+func (c *cmdable) Command() *CommandsInfoCmd {
 	cmd := NewCommandsInfoCmd("command")
 	c.process(cmd)
 	return cmd
diff --git a/iterator.go b/iterator.go
index 0219ab4..e9dfbad 100644
--- a/iterator.go
+++ b/iterator.go
@@ -3,7 +3,7 @@ package redis
 import "sync"
 
 type Scanner struct {
-	client cmdable
+	client *cmdable
 	*ScanCmd
 }
 
diff --git a/pipeline.go b/pipeline.go
index e946b9e..fed6e0c 100644
--- a/pipeline.go
+++ b/pipeline.go
@@ -22,32 +22,32 @@ type Pipeline struct {
 	closed int32
 }
 
-func (pipe *Pipeline) Process(cmd Cmder) error {
-	pipe.mu.Lock()
-	pipe.cmds = append(pipe.cmds, cmd)
-	pipe.mu.Unlock()
+func (c *Pipeline) Process(cmd Cmder) error {
+	c.mu.Lock()
+	c.cmds = append(c.cmds, cmd)
+	c.mu.Unlock()
 	return nil
 }
 
 // Close closes the pipeline, releasing any open resources.
-func (pipe *Pipeline) Close() error {
-	atomic.StoreInt32(&pipe.closed, 1)
-	pipe.Discard()
+func (c *Pipeline) Close() error {
+	atomic.StoreInt32(&c.closed, 1)
+	c.Discard()
 	return nil
 }
 
-func (pipe *Pipeline) isClosed() bool {
-	return atomic.LoadInt32(&pipe.closed) == 1
+func (c *Pipeline) isClosed() bool {
+	return atomic.LoadInt32(&c.closed) == 1
 }
 
 // Discard resets the pipeline and discards queued commands.
-func (pipe *Pipeline) Discard() error {
-	defer pipe.mu.Unlock()
-	pipe.mu.Lock()
-	if pipe.isClosed() {
+func (c *Pipeline) Discard() error {
+	defer c.mu.Unlock()
+	c.mu.Lock()
+	if c.isClosed() {
 		return pool.ErrClosed
 	}
-	pipe.cmds = pipe.cmds[:0]
+	c.cmds = c.cmds[:0]
 	return nil
 }
 
@@ -56,30 +56,30 @@ func (pipe *Pipeline) Discard() error {
 //
 // Exec always returns list of commands and error of the first failed
 // command if any.
-func (pipe *Pipeline) Exec() ([]Cmder, error) {
-	if pipe.isClosed() {
+func (c *Pipeline) Exec() ([]Cmder, error) {
+	if c.isClosed() {
 		return nil, pool.ErrClosed
 	}
 
-	defer pipe.mu.Unlock()
-	pipe.mu.Lock()
+	defer c.mu.Unlock()
+	c.mu.Lock()
 
-	if len(pipe.cmds) == 0 {
-		return pipe.cmds, nil
+	if len(c.cmds) == 0 {
+		return c.cmds, nil
 	}
 
-	cmds := pipe.cmds
-	pipe.cmds = nil
+	cmds := c.cmds
+	c.cmds = nil
 
-	return cmds, pipe.exec(cmds)
+	return cmds, c.exec(cmds)
 }
 
-func (pipe *Pipeline) pipelined(fn func(*Pipeline) error) ([]Cmder, error) {
-	if err := fn(pipe); err != nil {
+func (c *Pipeline) pipelined(fn func(*Pipeline) error) ([]Cmder, error) {
+	if err := fn(c); err != nil {
 		return nil, err
 	}
-	cmds, err := pipe.Exec()
-	_ = pipe.Close()
+	cmds, err := c.Exec()
+	_ = c.Close()
 	return cmds, err
 }
 
diff --git a/ring.go b/ring.go
index 50476fa..8aba07e 100644
--- a/ring.go
+++ b/ring.go
@@ -102,7 +102,7 @@ func (shard *ringShard) Vote(up bool) bool {
 // concurrent use by multiple goroutines.
 //
 // Ring monitors the state of each shard and removes dead shards from
-// the ring. When shard comes online it is added back to the ring. This
+// the c. When shard comes online it is added back to the c. This
 // gives you maximum availability and partition tolerance, but no
 // consistency between different shards or even clients. Each client
 // uses shards that are available to the client and does not do any
@@ -149,58 +149,58 @@ func NewRing(opt *RingOptions) *Ring {
 	return ring
 }
 
-func (ring *Ring) cmdInfo(name string) *CommandInfo {
-	ring.cmdsInfoOnce.Do(func() {
-		for _, shard := range ring.shards {
+func (c *Ring) cmdInfo(name string) *CommandInfo {
+	c.cmdsInfoOnce.Do(func() {
+		for _, shard := range c.shards {
 			cmdsInfo, err := shard.Client.Command().Result()
 			if err == nil {
-				ring.cmdsInfo = cmdsInfo
+				c.cmdsInfo = cmdsInfo
 				return
 			}
 		}
-		ring.cmdsInfoOnce = &sync.Once{}
+		c.cmdsInfoOnce = &sync.Once{}
 	})
-	if ring.cmdsInfo == nil {
+	if c.cmdsInfo == nil {
 		return nil
 	}
-	return ring.cmdsInfo[name]
+	return c.cmdsInfo[name]
 }
 
-func (ring *Ring) cmdFirstKey(cmd Cmder) string {
-	cmdInfo := ring.cmdInfo(cmd.arg(0))
+func (c *Ring) cmdFirstKey(cmd Cmder) string {
+	cmdInfo := c.cmdInfo(cmd.arg(0))
 	if cmdInfo == nil {
 		return ""
 	}
 	return cmd.arg(int(cmdInfo.FirstKeyPos))
 }
 
-func (ring *Ring) addClient(name string, cl *Client) {
-	ring.mu.Lock()
-	ring.hash.Add(name)
-	ring.shards[name] = &ringShard{Client: cl}
-	ring.mu.Unlock()
+func (c *Ring) addClient(name string, cl *Client) {
+	c.mu.Lock()
+	c.hash.Add(name)
+	c.shards[name] = &ringShard{Client: cl}
+	c.mu.Unlock()
 }
 
-func (ring *Ring) getClient(key string) (*Client, error) {
-	ring.mu.RLock()
+func (c *Ring) getClient(key string) (*Client, error) {
+	c.mu.RLock()
 
-	if ring.closed {
+	if c.closed {
 		return nil, pool.ErrClosed
 	}
 
-	name := ring.hash.Get(hashtag.Key(key))
+	name := c.hash.Get(hashtag.Key(key))
 	if name == "" {
-		ring.mu.RUnlock()
+		c.mu.RUnlock()
 		return nil, errRingShardsDown
 	}
 
-	cl := ring.shards[name].Client
-	ring.mu.RUnlock()
+	cl := c.shards[name].Client
+	c.mu.RUnlock()
 	return cl, nil
 }
 
-func (ring *Ring) Process(cmd Cmder) error {
-	cl, err := ring.getClient(ring.cmdFirstKey(cmd))
+func (c *Ring) Process(cmd Cmder) error {
+	cl, err := c.getClient(c.cmdFirstKey(cmd))
 	if err != nil {
 		cmd.setErr(err)
 		return err
@@ -208,34 +208,34 @@ func (ring *Ring) Process(cmd Cmder) error {
 	return cl.baseClient.Process(cmd)
 }
 
-// rebalance removes dead shards from the ring.
-func (ring *Ring) rebalance() {
-	defer ring.mu.Unlock()
-	ring.mu.Lock()
+// rebalance removes dead shards from the c.
+func (c *Ring) rebalance() {
+	defer c.mu.Unlock()
+	c.mu.Lock()
 
-	ring.hash = consistenthash.New(ring.nreplicas, nil)
-	for name, shard := range ring.shards {
+	c.hash = consistenthash.New(c.nreplicas, nil)
+	for name, shard := range c.shards {
 		if shard.IsUp() {
-			ring.hash.Add(name)
+			c.hash.Add(name)
 		}
 	}
 }
 
-// heartbeat monitors state of each shard in the ring.
-func (ring *Ring) heartbeat() {
+// heartbeat monitors state of each shard in the c.
+func (c *Ring) heartbeat() {
 	ticker := time.NewTicker(100 * time.Millisecond)
 	defer ticker.Stop()
 	for _ = range ticker.C {
 		var rebalance bool
 
-		ring.mu.RLock()
+		c.mu.RLock()
 
-		if ring.closed {
-			ring.mu.RUnlock()
+		if c.closed {
+			c.mu.RUnlock()
 			break
 		}
 
-		for _, shard := range ring.shards {
+		for _, shard := range c.shards {
 			err := shard.Client.Ping().Err()
 			if shard.Vote(err == nil || err == pool.ErrPoolTimeout) {
 				internal.Logf("ring shard state changed: %s", shard)
@@ -243,10 +243,10 @@ func (ring *Ring) heartbeat() {
 			}
 		}
 
-		ring.mu.RUnlock()
+		c.mu.RUnlock()
 
 		if rebalance {
-			ring.rebalance()
+			c.rebalance()
 		}
 	}
 }
@@ -255,45 +255,45 @@ func (ring *Ring) heartbeat() {
 //
 // It is rare to Close a Ring, as the Ring is meant to be long-lived
 // and shared between many goroutines.
-func (ring *Ring) Close() (retErr error) {
-	defer ring.mu.Unlock()
-	ring.mu.Lock()
+func (c *Ring) Close() (retErr error) {
+	defer c.mu.Unlock()
+	c.mu.Lock()
 
-	if ring.closed {
+	if c.closed {
 		return nil
 	}
-	ring.closed = true
+	c.closed = true
 
-	for _, shard := range ring.shards {
+	for _, shard := range c.shards {
 		if err := shard.Client.Close(); err != nil {
 			retErr = err
 		}
 	}
-	ring.hash = nil
-	ring.shards = nil
+	c.hash = nil
+	c.shards = nil
 
 	return retErr
 }
 
-func (ring *Ring) Pipeline() *Pipeline {
+func (c *Ring) Pipeline() *Pipeline {
 	pipe := Pipeline{
-		exec: ring.pipelineExec,
+		exec: c.pipelineExec,
 	}
 	pipe.cmdable.process = pipe.Process
 	pipe.statefulCmdable.process = pipe.Process
 	return &pipe
 }
 
-func (ring *Ring) Pipelined(fn func(*Pipeline) error) ([]Cmder, error) {
-	return ring.Pipeline().pipelined(fn)
+func (c *Ring) Pipelined(fn func(*Pipeline) error) ([]Cmder, error) {
+	return c.Pipeline().pipelined(fn)
 }
 
-func (ring *Ring) pipelineExec(cmds []Cmder) error {
+func (c *Ring) pipelineExec(cmds []Cmder) error {
 	var retErr error
 
 	cmdsMap := make(map[string][]Cmder)
 	for _, cmd := range cmds {
-		name := ring.hash.Get(hashtag.Key(ring.cmdFirstKey(cmd)))
+		name := c.hash.Get(hashtag.Key(c.cmdFirstKey(cmd)))
 		if name == "" {
 			cmd.setErr(errRingShardsDown)
 			if retErr == nil {
@@ -304,11 +304,11 @@ func (ring *Ring) pipelineExec(cmds []Cmder) error {
 		cmdsMap[name] = append(cmdsMap[name], cmd)
 	}
 
-	for i := 0; i <= ring.opt.MaxRetries; i++ {
+	for i := 0; i <= c.opt.MaxRetries; i++ {
 		failedCmdsMap := make(map[string][]Cmder)
 
 		for name, cmds := range cmdsMap {
-			client := ring.shards[name].Client
+			client := c.shards[name].Client
 			cn, err := client.conn()
 			if err != nil {
 				setCmdsErr(cmds, err)
diff --git a/tx.go b/tx.go
index 4f85cc8..5ed223c 100644
--- a/tx.go
+++ b/tx.go
@@ -39,7 +39,7 @@ func (c *Client) Watch(fn func(*Tx) error, keys ...string) error {
 	tx := c.newTx()
 	if len(keys) > 0 {
 		if err := tx.Watch(keys...).Err(); err != nil {
-			tx.close()
+			_ = tx.close()
 			return err
 		}
 	}
@@ -50,57 +50,57 @@ func (c *Client) Watch(fn func(*Tx) error, keys ...string) error {
 	return retErr
 }
 
-func (tx *Tx) Process(cmd Cmder) error {
-	if tx.cmds == nil {
-		return tx.baseClient.Process(cmd)
+func (c *Tx) Process(cmd Cmder) error {
+	if c.cmds == nil {
+		return c.baseClient.Process(cmd)
 	}
-	tx.cmds = append(tx.cmds, cmd)
+	c.cmds = append(c.cmds, cmd)
 	return nil
 }
 
 // close closes the transaction, releasing any open resources.
-func (tx *Tx) close() error {
-	if tx.closed {
+func (c *Tx) close() error {
+	if c.closed {
 		return nil
 	}
-	tx.closed = true
-	if err := tx.Unwatch().Err(); err != nil {
+	c.closed = true
+	if err := c.Unwatch().Err(); err != nil {
 		internal.Logf("Unwatch failed: %s", err)
 	}
-	return tx.baseClient.Close()
+	return c.baseClient.Close()
 }
 
 // Watch marks the keys to be watched for conditional execution
 // of a transaction.
-func (tx *Tx) Watch(keys ...string) *StatusCmd {
+func (c *Tx) Watch(keys ...string) *StatusCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "WATCH"
 	for i, key := range keys {
 		args[1+i] = key
 	}
 	cmd := NewStatusCmd(args...)
-	tx.Process(cmd)
+	c.Process(cmd)
 	return cmd
 }
 
 // Unwatch flushes all the previously watched keys for a transaction.
-func (tx *Tx) Unwatch(keys ...string) *StatusCmd {
+func (c *Tx) Unwatch(keys ...string) *StatusCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "UNWATCH"
 	for i, key := range keys {
 		args[1+i] = key
 	}
 	cmd := NewStatusCmd(args...)
-	tx.Process(cmd)
+	c.Process(cmd)
 	return cmd
 }
 
 // Discard discards queued commands.
-func (tx *Tx) Discard() error {
-	if tx.cmds == nil {
+func (c *Tx) Discard() error {
+	if c.cmds == nil {
 		return errDiscard
 	}
-	tx.cmds = tx.cmds[:1]
+	c.cmds = c.cmds[:1]
 	return nil
 }
 
@@ -113,19 +113,19 @@ func (tx *Tx) Discard() error {
 // Exec always returns list of commands. If transaction fails
 // TxFailedErr is returned. Otherwise Exec returns error of the first
 // failed command or nil.
-func (tx *Tx) MultiExec(fn func() error) ([]Cmder, error) {
-	if tx.closed {
+func (c *Tx) MultiExec(fn func() error) ([]Cmder, error) {
+	if c.closed {
 		return nil, pool.ErrClosed
 	}
 
-	tx.cmds = []Cmder{NewStatusCmd("MULTI")}
+	c.cmds = []Cmder{NewStatusCmd("MULTI")}
 	if err := fn(); err != nil {
 		return nil, err
 	}
-	tx.cmds = append(tx.cmds, NewSliceCmd("EXEC"))
+	c.cmds = append(c.cmds, NewSliceCmd("EXEC"))
 
-	cmds := tx.cmds
-	tx.cmds = nil
+	cmds := c.cmds
+	c.cmds = nil
 
 	if len(cmds) == 2 {
 		return []Cmder{}, nil
@@ -134,18 +134,18 @@ func (tx *Tx) MultiExec(fn func() error) ([]Cmder, error) {
 	// Strip MULTI and EXEC commands.
 	retCmds := cmds[1 : len(cmds)-1]
 
-	cn, err := tx.conn()
+	cn, err := c.conn()
 	if err != nil {
 		setCmdsErr(retCmds, err)
 		return retCmds, err
 	}
 
-	err = tx.execCmds(cn, cmds)
-	tx.putConn(cn, err, false)
+	err = c.execCmds(cn, cmds)
+	c.putConn(cn, err, false)
 	return retCmds, err
 }
 
-func (tx *Tx) execCmds(cn *pool.Conn, cmds []Cmder) error {
+func (c *Tx) execCmds(cn *pool.Conn, cmds []Cmder) error {
 	err := writeCmd(cn, cmds...)
 	if err != nil {
 		setCmdsErr(cmds[1:len(cmds)-1], err)