update golangci (#349)

* update golangci

cache/cache.go

@@ -2,7 +2,7 @@ package cache
 
 import "time"
 
-//Cache interface
+// Cache interface
 type Cache interface {
 	Get(key string) interface{}
 	Set(key string, val interface{}, timeout time.Duration) error

cache/memcache.go

@@ -7,18 +7,18 @@ import (
 	"github.com/bradfitz/gomemcache/memcache"
 )
 
-//Memcache struct contains *memcache.Client
+// Memcache struct contains *memcache.Client
 type Memcache struct {
 	conn *memcache.Client
 }
 
-//NewMemcache create new memcache
+// NewMemcache create new memcache
 func NewMemcache(server ...string) *Memcache {
 	mc := memcache.New(server...)
 	return &Memcache{mc}
 }
 
-//Get return cached value
+// Get return cached value
 func (mem *Memcache) Get(key string) interface{} {
 	var err error
 	var item *memcache.Item
@@ -40,7 +40,7 @@ func (mem *Memcache) IsExist(key string) bool {
 	return true
 }
 
-//Set cached value with key and expire time.
+// 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 {
@@ -51,7 +51,7 @@ func (mem *Memcache) Set(key string, val interface{}, timeout time.Duration) (er
 	return mem.conn.Set(item)
 }
 
-//Delete delete value in memcache.
+// Delete delete value in memcache.
 func (mem *Memcache) Delete(key string) error {
 	return mem.conn.Delete(key)
 }