package cache import ( "encoding/json" "time" ) type Cache interface { Del(k []byte) error Get(k []byte) ([]byte, error) Put(k []byte, v []byte, timeOut time.Time) error } type CacheHelp[T any] struct { Cache } func (c CacheHelp[T]) Get(k []byte) (T, error) { var t T b, err := c.Cache.Get(k) if err != nil { return t, err } if b == nil { return t, nil } err = json.Unmarshal(b, &t) if err != nil { return t, err } return t, nil } func (c CacheHelp[T]) Put(k []byte, v T, timeOut time.Time) error { b, err := json.Marshal(v) if err != nil { return err } return c.Cache.Put(k, b, timeOut) }