func removeFromCache(userId int64) (err error) {
if err = mc.Client().Delete(mc.UserCacheKey(userId)); err != nil {
if err == memcache.ErrCacheMiss {
err = nil
}
return
}
return
}
// 从缓存里获取 user 信息, 如果没有找到返回 ErrNotFound.
func getFromCache(userId int64, user *User) (err error) {
item, err := mc.Client().Get(mc.UserCacheKey(userId))
if err != nil {
if err == memcache.ErrCacheMiss {
err = ErrNotFound
}
return
}
return json.Unmarshal(item.Value, user)
}
func putToCache(user *User) (err error) {
userBytes, err := json.Marshal(user)
if err != nil {
return
}
mcItem := memcache.Item{
Key: mc.UserCacheKey(user.Id),
Value: userBytes,
}
return mc.Client().Set(&mcItem)
}