diff --git a/README.md b/README.md
index 1dacb7b..e520031 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ LedisDB now supports multiple databases as backend to store data, you can test a
 + Supports transaction using LMDB or BotlDB.
 + Supports lua scripting.
 + Supports expiration and ttl.
-+ Redis clients, like redis-cli, are supported directly.
++ Supports using redis-cli directly.
 + Multiple client API supports, including Go, Python, Lua(Openresty), C/C++, Node.js. 
 + Easy to embed in your own Go application. 
 + Restful API support, json/bson/msgpack output.
diff --git a/client/ledis-py/ledis/client.py b/client/ledis-py/ledis/client.py
index 6615c91..75d19c5 100644
--- a/client/ledis-py/ledis/client.py
+++ b/client/ledis-py/ledis/client.py
@@ -384,14 +384,14 @@ class Ledis(object):
         "Removes an expiration on name"
         return self.execute_command('PERSIST', name)
 
-    def scan(self, key="" , match=None, count=10):
+    def xscan(self, key="" , match=None, count=10):
         pieces = [key]
         if match is not None:
             pieces.extend(["MATCH", match])
 
         pieces.extend(["COUNT", count])
 
-        return self.execute_command("SCAN", *pieces)
+        return self.execute_command("XSCAN", *pieces)
 
     def scan_iter(self, match=None, count=10):
         key = ""
@@ -475,8 +475,8 @@ class Ledis(object):
         "Removes an expiration on ``name``"
         return self.execute_command('LPERSIST', name)
 
-    def lscan(self, key="", match=None, count=10):
-        return self.scan_generic("LSCAN", key=key, match=match, count=count)
+    def lxscan(self, key="", match=None, count=10):
+        return self.scan_generic("LXSCAN", key=key, match=match, count=count)
 
 
     #### SET COMMANDS ####
@@ -575,8 +575,8 @@ class Ledis(object):
         "Removes an expiration on name"
         return self.execute_command('SPERSIST', name)
 
-    def sscan(self, key="", match=None, count = 10):
-        return self.scan_generic("SSCAN", key=key, match=match, count=count)
+    def sxscan(self, key="", match=None, count = 10):
+        return self.scan_generic("SXSCAN", key=key, match=match, count=count)
 
 
     #### SORTED SET COMMANDS ####
@@ -783,8 +783,8 @@ class Ledis(object):
         scan_type = scan_type.upper()
         return self.execute_command(scan_type, *pieces)
 
-    def zscan(self, key="", match=None, count=10):
-        return self.scan_generic("ZSCAN", key=key, match=match, count=count)
+    def zxscan(self, key="", match=None, count=10):
+        return self.scan_generic("ZXSCAN", key=key, match=match, count=count)
 
     #### HASH COMMANDS ####
     def hdel(self, name, *keys):
@@ -878,8 +878,8 @@ class Ledis(object):
         "Removes an expiration on name"
         return self.execute_command('HPERSIST', name)
 
-    def hscan(self, key="", match=None, count=10):
-        return self.scan_generic("HSCAN", key=key, match=match, count=count)
+    def hxscan(self, key="", match=None, count=10):
+        return self.scan_generic("HXSCAN", key=key, match=match, count=count)
 
 
     ### BIT COMMANDS
@@ -957,8 +957,8 @@ class Ledis(object):
         "Removes an expiration on name"
         return self.execute_command('BPERSIST', name)
 
-    def bscan(self, key="", match=None, count=10):
-        return self.scan_generic("BSCAN", key=key, match=match, count=count)
+    def bxscan(self, key="", match=None, count=10):
+        return self.scan_generic("BXSCAN", key=key, match=match, count=count)
 
     def eval(self, script, keys, *args):
         n = len(keys)
diff --git a/client/ledis-py/tests/test_others.py b/client/ledis-py/tests/test_others.py
index 2cd7110..87eec68 100644
--- a/client/ledis-py/tests/test_others.py
+++ b/client/ledis-py/tests/test_others.py
@@ -63,12 +63,12 @@ class TestOtherCommands(unittest.TestCase):
 
     def check_keys(self, scan_type):
         d = {
-            "scan": l.scan,
-            "sscan": l.sscan,
-            "lscan": l.lscan,
-            "hscan": l.hscan,
-            "zscan": l.zscan,
-            "bscan": l.bscan
+            "xscan": l.xscan,
+            "sxscan": l.sxscan,
+            "lxscan": l.lxscan,
+            "hxscan": l.hxscan,
+            "zxscan": l.zxscan,
+            "bxscan": l.bxscan
         }
 
         key, keys = d[scan_type]()
@@ -82,40 +82,40 @@ class TestOtherCommands(unittest.TestCase):
         assert set(keys) == set([b("b"), b("c")])
 
 
-    def test_scan(self):
+    def test_xscan(self):
         d = {"a":1, "b":2, "c": 3}
         l.mset(d)
-        self.check_keys("scan") 
+        self.check_keys("xscan") 
 
 
-    def test_lscan(self):
+    def test_lxscan(self):
         l.rpush("a", 1)
         l.rpush("b", 1)
         l.rpush("c", 1)
-        self.check_keys("lscan")
+        self.check_keys("lxscan")
 
 
-    def test_hscan(self):
+    def test_hxscan(self):
         l.hset("a", "hello", "world")
         l.hset("b", "hello", "world")
         l.hset("c", "hello", "world")
-        self.check_keys("hscan")
+        self.check_keys("hxscan")
 
-    def test_sscan(self):
+    def test_sxscan(self):
         l.sadd("a", 1)
         l.sadd("b", 2)
         l.sadd("c", 3)
-        self.check_keys("sscan")
+        self.check_keys("sxscan")
 
-    def test_zscan(self):
+    def test_zxscan(self):
         l.zadd("a", 1, "a")
         l.zadd("b", 1, "a")
         l.zadd("c", 1, "a")
-        self.check_keys("zscan")
+        self.check_keys("zxscan")
 
-    def test_bscan(self):
+    def test_bxscan(self):
         l.bsetbit("a", 1, 1)
         l.bsetbit("b", 1, 1)
         l.bsetbit("c", 1, 1)
-        self.check_keys("bscan")
+        self.check_keys("bxscan")
 
diff --git a/client/nodejs/ledis/lib/commands.js b/client/nodejs/ledis/lib/commands.js
index 7271f3d..1b77c00 100644
--- a/client/nodejs/ledis/lib/commands.js
+++ b/client/nodejs/ledis/lib/commands.js
@@ -20,7 +20,7 @@ module.exports = [
 	"bexpireat",
 	"bttl",
 	"bpersist",
-	"bscan",
+	"bxscan",
 
 	"hdel",
 	"hexists",
@@ -40,7 +40,7 @@ module.exports = [
 	"hexpireat",
 	"httl",
 	"hpersist",
-	"hscan",
+	"hxscan",
 
 	"decr",
 	"decrby",
@@ -58,7 +58,7 @@ module.exports = [
 	"expireat",
 	"ttl",
 	"persist",
-	"scan",
+	"xscan",
 
 	"lindex",
 	"llen",
@@ -75,7 +75,7 @@ module.exports = [
 	"lexpireat",
 	"lttl",
 	"lpersist",
-	"lscan",
+	"lxscan",
 
 	"zadd",
 	"zcard",
@@ -101,7 +101,7 @@ module.exports = [
 	"zexpireat",
 	"zttl",
 	"zpersist",
-	"zscan",
+	"zxscan",
 
 
 	"sadd",
@@ -123,7 +123,7 @@ module.exports = [
 	"sexpireat",
 	"sttl",
 	"spersist",
-	"sscan",
+	"sxscan",
 
     "begin",
     "rollback",
diff --git a/client/openresty/ledis.lua b/client/openresty/ledis.lua
index 973d489..07c3f2b 100644
--- a/client/openresty/ledis.lua
+++ b/client/openresty/ledis.lua
@@ -40,7 +40,7 @@ local commands = {
     "expire",
     "expireat",
     "persist",
-    "scan",
+    "xscan",
 
     --[[hash]]
     "hdel", 
@@ -61,7 +61,7 @@ local commands = {
     "hexpireat",
     "httl",
     "hpersist",
-    "hscan",
+    "hxscan",
 
     --[[list]]
     "lindex", 
@@ -78,7 +78,7 @@ local commands = {
     "lexpireat",
     "lttl",
     "lpersist",
-    "lscan",
+    "lxscan",
 
     --[[zset]]
     "zadd", 
@@ -102,7 +102,7 @@ local commands = {
     "zexpireat",
     "zttl",
     "zpersist",
-    "zscan",
+    "zxscan",
 
     --[[bit]]
     "bget",
@@ -116,7 +116,7 @@ local commands = {
     "bexpireat",
     "bttl",
     "bpersist",
-    "bscan",
+    "bxscan",
 
     --[[set]]
     "sadd",
@@ -138,7 +138,7 @@ local commands = {
     "sexpireat",
     "sttl",
     "spersist",
-    "sscan",
+    "sxscan",
 
     --[[server]]
     "ping",
diff --git a/cmd/ledis-cli/const.go b/cmd/ledis-cli/const.go
index 9560c44..f816c5e 100644
--- a/cmd/ledis-cli/const.go
+++ b/cmd/ledis-cli/const.go
@@ -1,4 +1,4 @@
-//This file was generated by .tools/generate_commands.py on Tue Sep 02 2014 22:27:45 +0800 
+//This file was generated by .tools/generate_commands.py on Tue Sep 09 2014 09:48:57 +0800 
 package main
 
 var helpCommands = [][]string{
@@ -12,9 +12,9 @@ var helpCommands = [][]string{
 	{"BMSETBIT", "key offset value [offset value ...]", "Bitmap"},
 	{"BOPT", "operation destkey key [key ...]", "Bitmap"},
 	{"BPERSIST", "key", "Bitmap"},
-	{"BSCAN", "key [MATCH match] [COUNT count]", "Bitmap"},
 	{"BSETBIT", "key offset value", "Bitmap"},
 	{"BTTL", "key", "Bitmap"},
+	{"BXSCAN", "key [MATCH match] [COUNT count]", "Bitmap"},
 	{"COMMIT", "-", "Transaction"},
 	{"DECR", "key", "KV"},
 	{"DECRBY", "key decrement", "KV"},
@@ -44,10 +44,10 @@ var helpCommands = [][]string{
 	{"HMGET", "key field [field ...]", "Hash"},
 	{"HMSET", "key field value [field value ...]", "Hash"},
 	{"HPERSIST", "key", "Hash"},
-	{"HSCAN", "key [MATCH match] [COUNT count]", "Hash"},
 	{"HSET", "key field value", "Hash"},
 	{"HTTL", "key", "Hash"},
 	{"HVALS", "key", "Hash"},
+	{"HXSCAN", "key [MATCH match] [COUNT count]", "Hash"},
 	{"INCR", "key", "KV"},
 	{"INCRBY", "key increment", "KV"},
 	{"INFO", "[section]", "Server"},
@@ -61,8 +61,8 @@ var helpCommands = [][]string{
 	{"LPOP", "key", "List"},
 	{"LPUSH", "key value [value ...]", "List"},
 	{"LRANGE", "key start stop", "List"},
-	{"LSCAN", "key [MATCH match] [COUNT count]", "List"},
 	{"LTTL", "key", "List"},
+	{"LXSCAN", "key [MATCH match] [COUNT count]", "List"},
 	{"MGET", "key [key ...]", "KV"},
 	{"MSET", "key value [key value ...]", "KV"},
 	{"PERSIST", "key", "KV"},
@@ -71,7 +71,6 @@ var helpCommands = [][]string{
 	{"RPOP", "key", "List"},
 	{"RPUSH", "key value [value ...]", "List"},
 	{"SADD", "key member [member ...]", "Set"},
-	{"SCAN", "key [MATCH match] [COUNT count]", "KV"},
 	{"SCARD", "key", "Set"},
 	{"SCLEAR", "key", "Set"},
 	{"SCRIPT EXISTS", "script [script ...]", "Script"},
@@ -92,12 +91,13 @@ var helpCommands = [][]string{
 	{"SMEMBERS", "key", "Set"},
 	{"SPERSIST", "key", "Set"},
 	{"SREM", "key member [member ...]", "Set"},
-	{"SSCAN", "key [MATCH match] [COUNT count]", "Set"},
 	{"STTL", "key", "Set"},
 	{"SUNION", "key [key ...]", "Set"},
 	{"SUNIONSTORE", "destination key [key ...]", "Set"},
+	{"SXSCAN", "key [MATCH match] [COUNT count]", "Set"},
 	{"SYNC", "index offset", "Replication"},
 	{"TTL", "key", "KV"},
+	{"XSCAN", "key [MATCH match] [COUNT count]", "KV"},
 	{"ZADD", "key score member [score member ...]", "ZSet"},
 	{"ZCARD", "key", "ZSet"},
 	{"ZCLEAR", "key", "ZSet"},
@@ -117,8 +117,8 @@ var helpCommands = [][]string{
 	{"ZREVRANGE", "key start stop [WITHSCORES]", "ZSet"},
 	{"ZREVRANGEBYSCORE", "key max min  [WITHSCORES][LIMIT offset count]", "ZSet"},
 	{"ZREVRANK", "key member", "ZSet"},
-	{"ZSCAN", "key [MATCH match] [COUNT count]", "ZSet"},
 	{"ZSCORE", "key member", "ZSet"},
 	{"ZTTL", "key", "ZSet"},
 	{"ZUNIONSTORE", "destkey numkeys key [key ...] [WEIGHTS weight [weight ...]] [AGGREGATE SUM|MIN|MAX]", "ZSet"},
+	{"ZXSCAN", "key [MATCH match] [COUNT count]", "ZSet"},
 }
diff --git a/doc/DiffRedis.md b/doc/DiffRedis.md
new file mode 100644
index 0000000..ee1618c
--- /dev/null
+++ b/doc/DiffRedis.md
@@ -0,0 +1,60 @@
+
+LedisDB is not Redis, so you can not use some Redis clients for LedisDB directly. 
+But LedisDB uses Redis protocol for communication and many APIs are same as Redis, 
+so you can easily write your own LedisDB client based on a Redis one.
+
+Before you write a client, you must know some differences between LedisDB and Redis.
+
+## Data Structure
+
+LedisDB has no Strings data type but KV and Bitmap, any some Keys and Strings commands in Redis will only affect KV data, and "bit" commands affect Bitmap.
+
+## Del
+
+In Redis, `del` can delete all type data, like String, Hash, List, etc, but in LedisDB, `del` can only delete KV data. To delete other type data, you will use "clear" commands.
+
++ KV:     `del`, `mdel` 
++ Hash:   `hclear`, `mhclear` 
++ List:   `lclear`, `mlclear`
++ Set:    `sclear`, `msclear`  
++ Zset:   `zclear`, `mzclear`
++ Bitmap: `bclear`, `mbclear`
+
+## Expire, Persist, and TTL
+
+The same for Del.
+
++ KV:     `expire`, `persist`, `ttl` 
++ Hash:   `hexpire`, `hpersist`, `httl` 
++ List:   `lexpire`, `lpersist`, `lttl`
++ Set:    `sexpire`, `spersist`, `sttl`  
++ Zset:   `zexpire`, `zpersist`, `zttl`
++ Bitmap: `bexpire`, `bpersist`, `bttl`
+
+## ZSet
+
+ZSet only support int64 score, not double in Redis.
+
+## Transaction
+
+LedisDB supports ACID transaction using LMDB or BoltDB, maybe later it will support `multi`, `exec`, `discard`.
+
+Transaction API:
+
++ `begin`
++ `commit`
++ `rollback`
+
+## Scan
+
+LedisDB supplies `xscan`, etc, to fetch data iteratively.
+
++ KV:     `xscan`
++ Hash:   `hxscan`
++ List:   `lxscan`
++ Set:    `sxscan` 
++ Zset:   `zxscan`
++ Bitmap: `bxscan`
+
+
+Of course, LedisDB has not implemented all APIs in Redis, you can see full commands in commands.json, commands.doc or [wiki](https://github.com/siddontang/ledisdb/wiki/Commands).
\ No newline at end of file
diff --git a/doc/commands.json b/doc/commands.json
index 370d588..2ef0bbb 100644
--- a/doc/commands.json
+++ b/doc/commands.json
@@ -528,37 +528,37 @@
         "readonly": false
     },
 
-    "SCAN": {
+    "XSCAN": {
         "arguments": "key [MATCH match] [COUNT count]",
         "group": "KV",
         "readonly": true
     },
 
-    "HSCAN": {
+    "HXSCAN": {
         "arguments": "key [MATCH match] [COUNT count]",
         "group": "Hash",
         "readonly": true
     },
 
-    "LSCAN": {
+    "LXSCAN": {
         "arguments": "key [MATCH match] [COUNT count]",
         "group": "List",
         "readonly": true
     },
 
-    "SSCAN": {
+    "SXSCAN": {
         "arguments": "key [MATCH match] [COUNT count]",
         "group": "Set",
         "readonly": true
     },
 
-    "ZSCAN": {
+    "ZXSCAN": {
         "arguments": "key [MATCH match] [COUNT count]",
         "group": "ZSet",
         "readonly": true
     },
 
-    "BSCAN": {
+    "BXSCAN": {
         "arguments": "key [MATCH match] [COUNT count]",
         "group": "Bitmap",
         "readonly": true
diff --git a/doc/commands.md b/doc/commands.md
index 4dbaa92..183ab81 100644
--- a/doc/commands.md
+++ b/doc/commands.md
@@ -26,7 +26,7 @@ Table of Contents
 	- [EXPIREAT key timestamp](#expireat-key-timestamp)
 	- [TTL key](#ttl-key)
 	- [PERSIST key](#persist-key)
-	- [SCAN key [MATCH match] [COUNT count]](#scan-key-match-match-count-count)
+	- [XSCAN key [MATCH match] [COUNT count]](#xscan-key-match-match-count-count)
 - [Hash](#hash)
 	- [HDEL key field [field ...]](#hdel-key-field-field-)
 	- [HEXISTS key field](#hexists-key-field)
@@ -45,7 +45,7 @@ Table of Contents
 	- [HEXPIREAT key timestamp](#hexpireat-key-timestamp)
 	- [HTTL key](#httl-key)
 	- [HPERSIST key](#hpersist-key)
-	- [HSCAN key [MATCH match] [COUNT count]](#hscan-key-match-match-count-count)
+	- [HXSCAN key [MATCH match] [COUNT count]](#hxscan-key-match-match-count-count)
 - [List](#list)
 	- [LINDEX key index](#lindex-key-index)
 	- [LLEN key](#llen-key)
@@ -60,7 +60,7 @@ Table of Contents
 	- [LEXPIREAT key timestamp](#lexpireat-key-timestamp)
 	- [LTTL key](#lttl-key)
 	- [LPERSIST key](#lpersist-key)
-	- [LSCAN key [MATCH match] [COUNT count]](#lscan-key-match-match-count-count)
+	- [LXSCAN key [MATCH match] [COUNT count]](#lxscan-key-match-match-count-count)
 - [Set](#set)
 	- [SADD key member [member ...]](#sadd-key-member-member-)
 	- [SCARD key](#scard-key)
@@ -79,7 +79,7 @@ Table of Contents
 	- [SEXPIREAT key timestamp](#sexpireat-key-timestamp)
 	- [STTL key](#sttl-key)
 	- [SPERSIST key](#spersist-key)
-	- [SSCAN key [MATCH match] [COUNT count]](#sscan-key-match-match-count-count)
+	- [SXSCAN key [MATCH match] [COUNT count]](#sxscan-key-match-match-count-count)
 - [ZSet](#zset)
 	- [ZADD key score member [score member ...]](#zadd-key-score-member-score-member-)
 	- [ZCARD key](#zcard-key)
@@ -105,7 +105,7 @@ Table of Contents
 ](#zunionstore-destination-numkeys-key-key--weights-weight-weight--aggregate-summinmax)
     - [ZINTERSTORE destination numkeys key [key ...] [WEIGHTS weight [weight ...]] [AGGREGATE SUM|MIN|MAX]
 ](#zinterstore-destination-numkeys-key-key--weights-weight-weight--aggregate-summinmax)
-	- [ZSCAN key [MATCH match] [COUNT count]](#zscan-key-match-match-count-count)
+	- [ZXSCAN key [MATCH match] [COUNT count]](#zxscan-key-match-match-count-count)
 - [Bitmap](#bitmap)
 	- [BGET key](#bget-key)
 	- [BGETBIT key offset](#bgetbit-key-offset)
@@ -117,7 +117,7 @@ Table of Contents
 	- [BEXPIREAT key timestamp](#bexpireat-key-timestamp)
 	- [BTTL key](#bttl-key)
 	- [BPERSIST key](#bpersist-key)
-	- [BSCAN key [MATCH match] [COUNT count]](#bscan-key-match-match-count-count)
+	- [BXSCAN key [MATCH match] [COUNT count]](#bxscan-key-match-match-count-count)
 - [Replication](#replication)
 	- [SLAVEOF host port](#slaveof-host-port)
 	- [FULLSYNC](#fullsync)
@@ -469,7 +469,7 @@ ledis> TTL mykey
 (integer) -1
 ```
 
-### SCAN key [MATCH match] [COUNT count] 
+### XSCAN key [MATCH match] [COUNT count] 
 
 Iterate KV keys incrementally.
 
@@ -490,19 +490,19 @@ ledis>set b 2
 OK
 ledis>set c 3
 OK
-127.0.0.1:6380>scan "" 
+127.0.0.1:6380>xscan "" 
 1) ""
 2) ["a" "b" "c"]
-ledis>scan "" count 1
+ledis>xscan "" count 1
 1) "a"
 2) ["a"]
-ledis>scan "a" count 1
+ledis>xscan "a" count 1
 1) "b"
 2) ["b"]
-ledis>scan "b" count 1
+ledis>xscan "b" count 1
 1) "c"
 2) ["c"]
-ledis>scan "c" count 1
+ledis>xscan "c" count 1
 1) ""
 2) []
 ```
@@ -870,11 +870,11 @@ ledis> HPERSIST not_exists_key
 (integer) 0
 ```
 
-### HSCAN key [MATCH match] [COUNT count] 
+### HXSCAN key [MATCH match] [COUNT count] 
 
 Iterate Hash keys incrementally.
 
-See [Scan](#scan-key-match-match-count-count) for more information.
+See [XSCAN](#xscan-key-match-match-count-count) for more information.
 
 ## List
 
@@ -1167,11 +1167,11 @@ ledis> LPERSIST b
 (integer) 0
 ```
 
-### LSCAN key [MATCH match] [COUNT count] 
+### LXSCAN key [MATCH match] [COUNT count] 
 
 Iterate list keys incrementally.
 
-See [Scan](#scan-key-match-match-count-count) for more information.
+See [XSCAN](#xscan-key-match-match-count-count) for more information.
 
 
 ## Set
@@ -1595,11 +1595,11 @@ ledis> STTL key
 (integer) -1
 ```
 
-### SSCAN key [MATCH match] [COUNT count] 
+### SXSCAN key [MATCH match] [COUNT count] 
 
 Iterate Set keys incrementally.
 
-See [Scan](#scan-key-match-match-count-count) for more information.
+See [XSCAN](#xscan-key-match-match-count-count) for more information.
 
 
 ## ZSet
@@ -2221,11 +2221,11 @@ ledis> ZRANGE out 0 -1 WITHSCORES
 4) "10"
 ```
 
-### ZSCAN key [MATCH match] [COUNT count] 
+### ZXSCAN key [MATCH match] [COUNT count] 
 
 Iterate ZSet keys incrementally.
 
-See [Scan](#scan-key-match-match-count-count) for more information.
+See [XSCAN](#xscan-key-match-match-count-count) for more information.
 
 
 ## Bitmap
@@ -2387,11 +2387,11 @@ ledis> BCOUNT flag 5 6
 (refer to [PERSIST](#persist-key) api for other types)
 
 
-### BSCAN key [MATCH match] [COUNT count] 
+### BXSCAN key [MATCH match] [COUNT count] 
 
 Iterate Bitmap keys incrementally.
 
-See [Scan](#scan-key-match-match-count-count) for more information.
+See [XSCAN](#xscan-key-match-match-count-count) for more information.
 
 
 ## Replication
diff --git a/server/cmd_bit.go b/server/cmd_bit.go
index 5b23732..1f83bdc 100644
--- a/server/cmd_bit.go
+++ b/server/cmd_bit.go
@@ -272,7 +272,7 @@ func bpersistCommand(c *client) error {
 	return nil
 }
 
-func bscanCommand(c *client) error {
+func bxscanCommand(c *client) error {
 	key, match, count, err := parseScanArgs(c)
 	if err != nil {
 		return err
@@ -305,5 +305,5 @@ func init() {
 	register("bexpireat", bexpireAtCommand)
 	register("bttl", bttlCommand)
 	register("bpersist", bpersistCommand)
-	register("bscan", bscanCommand)
+	register("bxscan", bxscanCommand)
 }
diff --git a/server/cmd_hash.go b/server/cmd_hash.go
index ed7e458..e3094fd 100644
--- a/server/cmd_hash.go
+++ b/server/cmd_hash.go
@@ -292,7 +292,7 @@ func hpersistCommand(c *client) error {
 	return nil
 }
 
-func hscanCommand(c *client) error {
+func hxscanCommand(c *client) error {
 	key, match, count, err := parseScanArgs(c)
 	if err != nil {
 		return err
@@ -334,5 +334,5 @@ func init() {
 	register("hexpireat", hexpireAtCommand)
 	register("httl", httlCommand)
 	register("hpersist", hpersistCommand)
-	register("hscan", hscanCommand)
+	register("hxscan", hxscanCommand)
 }
diff --git a/server/cmd_kv.go b/server/cmd_kv.go
index 0be6abf..44eccf1 100644
--- a/server/cmd_kv.go
+++ b/server/cmd_kv.go
@@ -320,7 +320,7 @@ func parseScanArgs(c *client) (key []byte, match string, count int, err error) {
 	return
 }
 
-func scanCommand(c *client) error {
+func xscanCommand(c *client) error {
 	key, match, count, err := parseScanArgs(c)
 	if err != nil {
 		return err
@@ -358,5 +358,5 @@ func init() {
 	register("expireat", expireAtCommand)
 	register("ttl", ttlCommand)
 	register("persist", persistCommand)
-	register("scan", scanCommand)
+	register("xscan", xscanCommand)
 }
diff --git a/server/cmd_list.go b/server/cmd_list.go
index c6cb923..722d5f1 100644
--- a/server/cmd_list.go
+++ b/server/cmd_list.go
@@ -228,7 +228,7 @@ func lpersistCommand(c *client) error {
 	return nil
 }
 
-func lscanCommand(c *client) error {
+func lxscanCommand(c *client) error {
 	key, match, count, err := parseScanArgs(c)
 	if err != nil {
 		return err
@@ -266,5 +266,5 @@ func init() {
 	register("lexpireat", lexpireAtCommand)
 	register("lttl", lttlCommand)
 	register("lpersist", lpersistCommand)
-	register("lscan", lscanCommand)
+	register("lxscan", lxscanCommand)
 }
diff --git a/server/cmd_set.go b/server/cmd_set.go
index 466413d..4992bbf 100644
--- a/server/cmd_set.go
+++ b/server/cmd_set.go
@@ -262,7 +262,7 @@ func spersistCommand(c *client) error {
 	return nil
 }
 
-func sscanCommand(c *client) error {
+func sxscanCommand(c *client) error {
 	key, match, count, err := parseScanArgs(c)
 	if err != nil {
 		return err
@@ -301,5 +301,5 @@ func init() {
 	register("sexpireat", sexpireAtCommand)
 	register("sttl", sttlCommand)
 	register("spersist", spersistCommand)
-	register("sscan", sscanCommand)
+	register("sxscan", sxscanCommand)
 }
diff --git a/server/cmd_zset.go b/server/cmd_zset.go
index 6f33f54..ee55faf 100644
--- a/server/cmd_zset.go
+++ b/server/cmd_zset.go
@@ -638,7 +638,7 @@ func zinterstoreCommand(c *client) error {
 	return err
 }
 
-func zscanCommand(c *client) error {
+func zxscanCommand(c *client) error {
 	key, match, count, err := parseScanArgs(c)
 	if err != nil {
 		return err
@@ -686,5 +686,5 @@ func init() {
 	register("zexpireat", zexpireAtCommand)
 	register("zttl", zttlCommand)
 	register("zpersist", zpersistCommand)
-	register("zscan", zscanCommand)
+	register("zxscan", zxscanCommand)
 }
diff --git a/server/scan_test.go b/server/scan_test.go
index 809eb39..bc47395 100644
--- a/server/scan_test.go
+++ b/server/scan_test.go
@@ -84,7 +84,7 @@ func testKVScan(t *testing.T, c *ledis.Client) {
 		}
 	}
 
-	checkScan(t, c, "scan")
+	checkScan(t, c, "xscan")
 }
 
 func testHashScan(t *testing.T, c *ledis.Client) {
@@ -94,7 +94,7 @@ func testHashScan(t *testing.T, c *ledis.Client) {
 		}
 	}
 
-	checkScan(t, c, "hscan")
+	checkScan(t, c, "hxscan")
 }
 
 func testListScan(t *testing.T, c *ledis.Client) {
@@ -104,7 +104,7 @@ func testListScan(t *testing.T, c *ledis.Client) {
 		}
 	}
 
-	checkScan(t, c, "lscan")
+	checkScan(t, c, "lxscan")
 }
 
 func testZSetScan(t *testing.T, c *ledis.Client) {
@@ -114,7 +114,7 @@ func testZSetScan(t *testing.T, c *ledis.Client) {
 		}
 	}
 
-	checkScan(t, c, "zscan")
+	checkScan(t, c, "zxscan")
 }
 
 func testSetScan(t *testing.T, c *ledis.Client) {
@@ -124,7 +124,7 @@ func testSetScan(t *testing.T, c *ledis.Client) {
 		}
 	}
 
-	checkScan(t, c, "sscan")
+	checkScan(t, c, "sxscan")
 }
 
 func testBitScan(t *testing.T, c *ledis.Client) {
@@ -134,5 +134,5 @@ func testBitScan(t *testing.T, c *ledis.Client) {
 		}
 	}
 
-	checkScan(t, c, "bscan")
+	checkScan(t, c, "bxscan")
 }