58 lines
1.2 KiB
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)
|
|
}
|