Add GetMulti method for Cache interface

cache/memcache/memcache.go

@@ -63,6 +63,32 @@ func (rc *MemcacheCache) Get(key string) interface{} {
 	return nil
 }
 
+// get value from memcache.
+func (rc *MemcacheCache) GetMulti(keys []string) []interface{} {
+	size := len(keys)
+	var rv []interface{}
+	if rc.conn == nil {
+		if err := rc.connectInit(); err != nil {
+			for i := 0; i < size; i++ {
+				rv = append(rv, err)
+			}
+			return rv
+		}
+	}
+	mv, err := rc.conn.GetMulti(keys)
+	if err == nil {
+		for _, v := range mv {
+			rv = append(rv, string(v.Value))
+		}
+		return rv
+	} else {
+		for i := 0; i < size; i++ {
+			rv = append(rv, err)
+		}
+		return rv
+	}
+}
+
 // put value to memcache. only support string.
 func (rc *MemcacheCache) Put(key string, val interface{}, timeout int64) error {
 	if rc.conn == nil {

cache/memcache/memcache_test.go

@@ -0,0 +1,106 @@
+// Copyright 2014 beego Author. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package memcache
+
+import (
+	_ "github.com/bradfitz/gomemcache/memcache"
+
+	"github.com/astaxie/beego/cache"
+	"strconv"
+	"testing"
+	"time"
+)
+
+func TestRedisCache(t *testing.T) {
+	bm, err := cache.NewCache("memcache", `{"conn": "127.0.0.1:11211"}`)
+	if err != nil {
+		t.Error("init err")
+	}
+	if err = bm.Put("astaxie", "1", 10); err != nil {
+		t.Error("set Error", err)
+	}
+	if !bm.IsExist("astaxie") {
+		t.Error("check err")
+	}
+
+	time.Sleep(10 * time.Second)
+
+	if bm.IsExist("astaxie") {
+		t.Error("check err")
+	}
+	if err = bm.Put("astaxie", "1", 10); err != nil {
+		t.Error("set Error", err)
+	}
+
+	if v, err := strconv.Atoi(bm.Get("astaxie").(string)); err != nil || v != 1 {
+		t.Error("get err")
+	}
+
+	if err = bm.Incr("astaxie"); err != nil {
+		t.Error("Incr Error", err)
+	}
+
+	if v, err := strconv.Atoi(bm.Get("astaxie").(string)); err != nil || v != 2 {
+		t.Error("get err")
+	}
+
+	if err = bm.Decr("astaxie"); err != nil {
+		t.Error("Decr Error", err)
+	}
+
+	if v, err := strconv.Atoi(bm.Get("astaxie").(string)); err != nil || v != 1 {
+		t.Error("get err")
+	}
+	bm.Delete("astaxie")
+	if bm.IsExist("astaxie") {
+		t.Error("delete err")
+	}
+
+	//test string
+	if err = bm.Put("astaxie", "author", 10); err != nil {
+		t.Error("set Error", err)
+	}
+	if !bm.IsExist("astaxie") {
+		t.Error("check err")
+	}
+
+	if v := bm.Get("astaxie").(string); v != "author" {
+		t.Error("get err")
+	}
+
+	//test GetMulti
+	if err = bm.Put("astaxie1", "author1", 10); err != nil {
+		t.Error("set Error", err)
+	}
+	if !bm.IsExist("astaxie1") {
+		t.Error("check err")
+	}
+
+	vv := bm.GetMulti([]string{"astaxie", "astaxie1"})
+	if len(vv) != 2 {
+		t.Error("GetMulti ERROR")
+	}
+	if vv[0].(string) != "author" {
+		t.Error("GetMulti ERROR")
+	}
+	if vv[1].(string) != "author1" {
+		t.Error("GetMulti ERROR")
+	}
+
+	// test clear all
+	if err = bm.ClearAll(); err != nil {
+		t.Error("clear all err")
+	}
+}