update memcached

memcached_cache.go

@@ -0,0 +1,57 @@
+package gocache
+
+import (
+	"encoding/json"
+	"github.com/bradfitz/gomemcache/memcache"
+)
+
+// MemcachedCache https://github.com/bradfitz/gomemcache
+type MemcachedCache struct {
+	db              *Memcached       // 驱动
+	GetterString    GttStringFunc    // 不存在的操作
+	GetterInterface GttInterfaceFunc // 不存在的操作
+}
+
+// NewCache 实例化
+func (m *Memcached) NewCache() *MemcachedCache {
+	return &MemcachedCache{db: m}
+}
+
+// GetString 缓存操作
+func (mc *MemcachedCache) GetString(key string) (ret string) {
+
+	f := func() string {
+		return mc.GetterString()
+	}
+
+	// 如果不存在，则调用GetterString
+	ret, err := mc.db.Get(key)
+
+	if err == memcache.ErrCacheMiss {
+		mc.db.Set(key, []byte(f()))
+		ret, _ = mc.db.Get(key)
+	}
+
+	return
+}
+
+// GetInterface 缓存操作
+func (mc *MemcachedCache) GetInterface(key string, result interface{}) {
+
+	f := func() string {
+		marshal, _ := json.Marshal(mc.GetterInterface())
+		return string(marshal)
+	}
+
+	// 如果不存在，则调用GetterInterface
+	get, err := mc.db.Get(key)
+
+	if err == memcache.ErrCacheMiss {
+		mc.db.Set(key, []byte(f()))
+		get, _ = mc.db.Get(key)
+	}
+
+	err = json.Unmarshal([]byte(get), result)
+
+	return
+}