diff --git a/client.go b/client.go
index 5cfb2f44..0f4c9b5d 100644
--- a/client.go
+++ b/client.go
@@ -319,15 +319,6 @@ func isRetryable(err error, w wire, ctx context.Context) bool {
 	return err != nil && w.Error() == nil && ctx.Err() == nil
 }
 
-func anyRetryable(resp []RedisResult, w wire, ctx context.Context) bool {
-	for _, r := range resp {
-		if isRetryable(r.NonRedisError(), w, ctx) {
-			return true
-		}
-	}
-	return false
-}
-
 func allReadOnly(multi []Completed) bool {
 	for _, cmd := range multi {
 		if cmd.IsWrite() {
diff --git a/mock/go.mod b/mock/go.mod
index c0bfbf93..ecf194f4 100644
--- a/mock/go.mod
+++ b/mock/go.mod
@@ -5,7 +5,7 @@ go 1.21
 replace github.com/redis/rueidis => ../
 
 require (
-	github.com/redis/rueidis v1.0.47
+	github.com/redis/rueidis v1.0.48
 	go.uber.org/mock v0.4.0
 )
 
diff --git a/om/go.mod b/om/go.mod
index 44355263..f962427c 100644
--- a/om/go.mod
+++ b/om/go.mod
@@ -6,7 +6,7 @@ replace github.com/redis/rueidis => ../
 
 require (
 	github.com/oklog/ulid/v2 v2.1.0
-	github.com/redis/rueidis v1.0.47
+	github.com/redis/rueidis v1.0.48
 )
 
 require golang.org/x/sys v0.24.0 // indirect
diff --git a/pipe.go b/pipe.go
index eee7c6f3..c24802b4 100644
--- a/pipe.go
+++ b/pipe.go
@@ -20,7 +20,7 @@ import (
 )
 
 const LibName = "rueidis"
-const LibVer = "1.0.47"
+const LibVer = "1.0.48"
 
 var noHello = regexp.MustCompile("unknown command .?(HELLO|hello).?")
 
@@ -73,6 +73,7 @@ type pipe struct {
 	waits           int32
 	recvs           int32
 	r2ps            bool // identify this pipe is used for resp2 pubsub or not
+	noNoDelay       bool
 }
 
 type pipeFn func(connFn func() (net.Conn, error), option *ClientOption) (p *pipe, err error)
@@ -98,6 +99,7 @@ func _newPipe(connFn func() (net.Conn, error), option *ClientOption, r2ps, nobg
 		timeout:       option.ConnWriteTimeout,
 		pinggap:       option.Dialer.KeepAlive,
 		maxFlushDelay: option.MaxFlushDelay,
+		noNoDelay:     option.DisableTCPNoDelay,
 
 		r2ps: r2ps,
 	}
@@ -113,7 +115,7 @@ func _newPipe(connFn func() (net.Conn, error), option *ClientOption, r2ps, nobg
 			return _newPipe(connFn, option, true, nobg)
 		}
 	}
-	if !option.DisableCache {
+	if !nobg && !option.DisableCache {
 		cacheStoreFn := option.NewCacheStoreFn
 		if cacheStoreFn == nil {
 			cacheStoreFn = newLRU
@@ -321,6 +323,9 @@ func (p *pipe) _exit(err error) {
 
 func (p *pipe) _background() {
 	p.conn.SetDeadline(time.Time{})
+	if conn, ok := p.conn.(*net.TCPConn); ok && p.noNoDelay {
+		conn.SetNoDelay(false)
+	}
 	go func() {
 		p._exit(p._backgroundWrite())
 		close(p.close)
diff --git a/pool.go b/pool.go
index d45ede84..f0a69c63 100644
--- a/pool.go
+++ b/pool.go
@@ -9,9 +9,10 @@ func newPool(cap int, dead wire, makeFn func() wire) *pool {
 
 	return &pool{
 		size: 0,
+		cap:  cap,
 		dead: dead,
 		make: makeFn,
-		list: make([]wire, 0, cap),
+		list: make([]wire, 0, 4),
 		cond: sync.NewCond(&sync.Mutex{}),
 	}
 }
@@ -22,12 +23,13 @@ type pool struct {
 	make func() wire
 	list []wire
 	size int
+	cap  int
 	down bool
 }
 
 func (p *pool) Acquire() (v wire) {
 	p.cond.L.Lock()
-	for len(p.list) == 0 && p.size == cap(p.list) && !p.down {
+	for len(p.list) == 0 && p.size == p.cap && !p.down {
 		p.cond.Wait()
 	}
 	if p.down {
diff --git a/retry.go b/retry.go
index 1f50bab2..5b116650 100644
--- a/retry.go
+++ b/retry.go
@@ -2,6 +2,7 @@ package rueidis
 
 import (
 	"context"
+	"runtime"
 	"time"
 
 	"github.com/redis/rueidis/internal/util"
@@ -57,36 +58,31 @@ func (r *retryer) RetryDelay(attempts int, cmd Completed, err error) time.Durati
 }
 
 func (r *retryer) WaitForRetry(ctx context.Context, duration time.Duration) {
-	if duration <= 0 {
-		return
-	}
-
-	if ch := ctx.Done(); ch != nil {
-		tm := time.NewTimer(duration)
-		defer tm.Stop()
-		select {
-		case <-ch:
-		case <-tm.C:
+	if duration > 0 {
+		if ch := ctx.Done(); ch != nil {
+			tm := time.NewTimer(duration)
+			defer tm.Stop()
+			select {
+			case <-ch:
+			case <-tm.C:
+			}
+		} else {
+			time.Sleep(duration)
 		}
-	} else {
-		time.Sleep(duration)
 	}
 }
 
 func (r *retryer) WaitOrSkipRetry(
 	ctx context.Context, attempts int, cmd Completed, err error,
 ) bool {
-	delay := r.RetryDelay(attempts, cmd, err)
-	if delay < 0 {
-		return false
-	}
-	if delay == 0 {
-		return true
-	}
-
-	if dl, ok := ctx.Deadline(); !ok || time.Until(dl) > delay {
-		r.WaitForRetry(ctx, delay)
+	if delay := r.RetryDelay(attempts, cmd, err); delay == 0 {
+		runtime.Gosched()
 		return true
+	} else if delay > 0 {
+		if dl, ok := ctx.Deadline(); !ok || time.Until(dl) > delay {
+			r.WaitForRetry(ctx, delay)
+			return true
+		}
 	}
 	return false
 }
diff --git a/retry_test.go b/retry_test.go
index 765eb4fc..111e743f 100644
--- a/retry_test.go
+++ b/retry_test.go
@@ -124,6 +124,19 @@ func TestRetrier_WaitOrSkipRetry(t *testing.T) {
 		}
 	})
 
+	t.Run("RetryDelayFn returns 0 delay", func(t *testing.T) {
+		r := &retryer{
+			RetryDelayFn: func(attempts int, _ Completed, err error) time.Duration {
+				return 0
+			},
+		}
+
+		shouldRetry := r.WaitOrSkipRetry(nil, 0, Completed{}, nil)
+		if !shouldRetry {
+			t.Error("WaitOrSkipRetry() = false; want true")
+		}
+	})
+
 	t.Run("context is canceled", func(t *testing.T) {
 		r := &retryer{
 			RetryDelayFn: func(attempts int, _ Completed, err error) time.Duration {
diff --git a/rueidis.go b/rueidis.go
index 0fb8f62c..d0919a1d 100644
--- a/rueidis.go
+++ b/rueidis.go
@@ -22,7 +22,7 @@ const (
 	// DefaultRingScale is the default value of ClientOption.RingScaleEachConn, which results into having a ring of size 2^10 for each connection
 	DefaultRingScale = 10
 	// DefaultPoolSize is the default value of ClientOption.BlockingPoolSize
-	DefaultPoolSize = 1000
+	DefaultPoolSize = 1024
 	// DefaultBlockingPipeline is the default value of ClientOption.BlockingPipeline
 	DefaultBlockingPipeline = 2000
 	// DefaultDialTimeout is the default value of ClientOption.Dialer.Timeout
@@ -161,6 +161,11 @@ type ClientOption struct {
 	// produce notable CPU usage reduction under load. Ref: https://github.com/redis/rueidis/issues/156
 	MaxFlushDelay time.Duration
 
+	// DisableTCPNoDelay turns on Nagle's algorithm in pipelining mode by using conn.SetNoDelay(false).
+	// Turning this on can result in lower p99 latencies and lower CPU usages if all your requests are small.
+	// But if you have large requests or fast network, this might degrade the performance. Ref: https://github.com/redis/rueidis/pull/650
+	DisableTCPNoDelay bool
+
 	// ShuffleInit is a handy flag that shuffles the InitAddress after passing to the NewClient() if it is true
 	ShuffleInit bool
 	// ClientNoTouch controls whether commands alter LRU/LFU stats
diff --git a/rueidiscompat/go.mod b/rueidiscompat/go.mod
index 09665d06..d23bc84c 100644
--- a/rueidiscompat/go.mod
+++ b/rueidiscompat/go.mod
@@ -9,8 +9,8 @@ replace github.com/redis/rueidis/mock => ../mock
 require (
 	github.com/onsi/ginkgo/v2 v2.20.1
 	github.com/onsi/gomega v1.34.1
-	github.com/redis/rueidis v1.0.47
-	github.com/redis/rueidis/mock v1.0.47
+	github.com/redis/rueidis v1.0.48
+	github.com/redis/rueidis/mock v1.0.48
 	go.uber.org/mock v0.4.0
 )
 
diff --git a/rueidishook/go.mod b/rueidishook/go.mod
index 8259fc17..95aa4ddd 100644
--- a/rueidishook/go.mod
+++ b/rueidishook/go.mod
@@ -8,8 +8,8 @@ replace (
 )
 
 require (
-	github.com/redis/rueidis v1.0.47
-	github.com/redis/rueidis/mock v1.0.47
+	github.com/redis/rueidis v1.0.48
+	github.com/redis/rueidis/mock v1.0.48
 	go.uber.org/mock v0.4.0
 )
 
diff --git a/rueidisotel/go.mod b/rueidisotel/go.mod
index 59ae91da..72bb6dba 100644
--- a/rueidisotel/go.mod
+++ b/rueidisotel/go.mod
@@ -5,7 +5,7 @@ go 1.21
 replace github.com/redis/rueidis => ../
 
 require (
-	github.com/redis/rueidis v1.0.47
+	github.com/redis/rueidis v1.0.48
 	go.opentelemetry.io/otel v1.28.0
 	go.opentelemetry.io/otel/metric v1.28.0
 	go.opentelemetry.io/otel/sdk v1.28.0
diff --git a/rueidisprob/go.mod b/rueidisprob/go.mod
index 4552ef94..e95435a9 100644
--- a/rueidisprob/go.mod
+++ b/rueidisprob/go.mod
@@ -5,7 +5,7 @@ go 1.21
 replace github.com/redis/rueidis => ../
 
 require (
-	github.com/redis/rueidis v1.0.47
+	github.com/redis/rueidis v1.0.48
 	github.com/twmb/murmur3 v1.1.8
 )