优化ttlcache

internal/ttlcache/cache.go

@@ -54,7 +54,7 @@ func NewCache(opt ...OptionInterface) *Cache {
 		}
 	}
 
-	cache := &Cache{
+	var cache = &Cache{
 		countPieces: uint64(countPieces),
 		maxItems:    maxItems,
 	}

internal/ttlcache/cache_test.go

@@ -165,6 +165,13 @@ func TestCache_GC2(t *testing.T) {
 	}
 }
 
+func TestCacheDestroy(t *testing.T) {
+	var cache = NewCache()
+	t.Log("count:", SharedManager.Count())
+	cache.Destroy()
+	t.Log("count:", SharedManager.Count())
+}
+
 func BenchmarkNewCache(b *testing.B) {
 	runtime.GOMAXPROCS(1)
 

internal/ttlcache/manager.go

@@ -52,3 +52,9 @@ func (this *Manager) Remove(cache *Cache) {
 	delete(this.cacheMap, cache)
 	this.locker.Unlock()
 }
+
+func (this *Manager) Count() int {
+	this.locker.Lock()
+	defer this.locker.Unlock()
+	return len(this.cacheMap)
+}