Add releaseConnStrict

cluster.go

@@ -1272,11 +1272,7 @@ func (c *ClusterClient) defaultProcessPipeline(cmds []Cmder) error {
 				}
 
 				err = c.pipelineProcessCmds(node, cn, cmds, failedCmds)
-				if err == nil || internal.IsRedisError(err) {
-					node.Client.connPool.Put(cn)
-				} else {
-					node.Client.connPool.Remove(cn)
-				}
+				node.Client.releaseConnStrict(cn, err)
 			}(node, cmds)
 		}
 
@@ -1466,11 +1462,7 @@ func (c *ClusterClient) defaultProcessTxPipeline(cmds []Cmder) error {
 					}
 
 					err = c.txPipelineProcessCmds(node, cn, cmds, failedCmds)
-					if err == nil || internal.IsRedisError(err) {
-						node.Client.connPool.Put(cn)
-					} else {
-						node.Client.connPool.Remove(cn)
-					}
+					node.Client.releaseConnStrict(cn, err)
 				}(node, cmds)
 			}
 

internal/error.go

@@ -9,6 +9,9 @@ import (
 )
 
 func IsRetryableError(err error, retryTimeout bool) bool {
+	if err == nil {
+		return false
+	}
 	if err == io.EOF {
 		return true
 	}

redis.go

@@ -77,14 +77,20 @@ func (c *baseClient) getConn() (*pool.Conn, error) {
 	return cn, nil
 }
 
-func (c *baseClient) releaseConn(cn *pool.Conn, err error) bool {
+func (c *baseClient) releaseConn(cn *pool.Conn, err error) {
 	if internal.IsBadConn(err, false) {
 		c.connPool.Remove(cn)
-		return false
-	}
-
+	} else {
 		c.connPool.Put(cn)
-	return true
+	}
+}
+
+func (c *baseClient) releaseConnStrict(cn *pool.Conn, err error) {
+	if err == nil || internal.IsRedisError(err) {
+		c.connPool.Put(cn)
+	} else {
+		c.connPool.Remove(cn)
+	}
 }
 
 func (c *baseClient) initConn(cn *pool.Conn) error {
@@ -248,12 +254,7 @@ func (c *baseClient) generalProcessPipeline(cmds []Cmder, p pipelineProcessor) e
 		}
 
 		canRetry, err := p(cn, cmds)
-
-		if err == nil || internal.IsRedisError(err) {
-			c.connPool.Put(cn)
-			break
-		}
-		c.connPool.Remove(cn)
+		c.releaseConnStrict(cn, err)
 
 		if !canRetry || !internal.IsRetryableError(err, true) {
 			break

ring.go

@@ -614,11 +614,7 @@ func (c *Ring) defaultProcessPipeline(cmds []Cmder) error {
 				}
 
 				canRetry, err := shard.Client.pipelineProcessCmds(cn, cmds)
-				if err == nil || internal.IsRedisError(err) {
-					shard.Client.connPool.Put(cn)
-					return
-				}
-				shard.Client.connPool.Remove(cn)
+				shard.Client.releaseConnStrict(cn, err)
 
 				if canRetry && internal.IsRetryableError(err, true) {
 					mu.Lock()