enterprise/base/wechat/cache/memcache.go

58 lines
1.2 KiB
Go

package cache
import (
"encoding/json"
"time"
"github.com/bradfitz/gomemcache/memcache"
)
//Memcache struct contains *memcache.Client
type Memcache struct {
conn *memcache.Client
}
//NewMemcache create new memcache
func NewMemcache(server ...string) *Memcache {
mc := memcache.New(server...)
return &Memcache{mc}
}
//Get return cached value
func (mem *Memcache) Get(key string) interface{} {
var err error
var item *memcache.Item
if item, err = mem.conn.Get(key); err != nil {
return nil
}
var result interface{}
if err = json.Unmarshal(item.Value, &result); err != nil {
return nil
}
return result
}
// IsExist check value exists in memcache.
func (mem *Memcache) IsExist(key string) bool {
if _, err := mem.conn.Get(key); err != nil {
return false
}
return true
}
//Set cached value with key and expire time.
func (mem *Memcache) Set(key string, val interface{}, timeout time.Duration) (err error) {
var data []byte
if data, err = json.Marshal(val); err != nil {
return err
}
item := &memcache.Item{Key: key, Value: data, Expiration: int32(timeout / time.Second)}
return mem.conn.Set(item)
}
//Delete delete value in memcache.
func (mem *Memcache) Delete(key string) error {
return mem.conn.Delete(key)
}