优化代码

internal/caches/storage_file.go

@@ -65,12 +65,13 @@ var sharedWritingFileKeyLocker = sync.Mutex{}
 
 var maxOpenFiles = NewMaxOpenFiles()
 
-const maxOpenFilesSlowCost = 5000 * time.Microsecond // 0.5ms
+const maxOpenFilesSlowCost = 1000 * time.Microsecond // us
 const protectingLoadWhenDump = false
 
 // FileStorage 文件缓存
-//   文件结构：
-//    [expires time] | [ status ] | [url length] | [header length] | [body length] | [url] [header data] [body data]
+//
+//	文件结构：
+//	 [expires time] | [ status ] | [url length] | [header length] | [body length] | [url] [header data] [body data]
 type FileStorage struct {
 	policy        *serverconfigs.HTTPCachePolicy
 	options       *serverconfigs.HTTPFileCacheStorage // 二级缓存

internal/caches/storage_memory.go

@@ -95,7 +95,8 @@ func (this *MemoryStorage) Init() error {
 	// 启动定时Flush memory to disk任务
 	if this.parentStorage != nil {
 		// TODO 应该根据磁盘性能决定线程数
-		var threads = 1
+		// TODO 线程数应该可以在缓存策略和节点中设定
+		var threads = runtime.NumCPU()
 
 		for i := 0; i < threads; i++ {
 			goman.New(func() {

internal/caches/storage_memory_test.go

@@ -8,6 +8,7 @@ import (
 	"runtime"
 	"runtime/debug"
 	"strconv"
+	"sync"
 	"testing"
 	"time"
 )
@@ -304,3 +305,30 @@ func TestMemoryStorage_Stop(t *testing.T) {
 
 	t.Log(len(m))
 }
+
+func BenchmarkValuesMap(b *testing.B) {
+	var m = map[uint64]*MemoryItem{}
+	var count = 1_000_000
+	for i := 0; i < count; i++ {
+		m[uint64(i)] = &MemoryItem{
+			ExpiresAt: time.Now().Unix(),
+		}
+	}
+	b.Log(len(m))
+
+	var locker = sync.Mutex{}
+	b.ResetTimer()
+
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			locker.Lock()
+			_, ok := m[uint64(rands.Int(0, 1_000_000))]
+			_ = ok
+			locker.Unlock()
+
+			locker.Lock()
+			delete(m, uint64(rands.Int(2, 1000000)))
+			locker.Unlock()
+		}
+	})
+}