package server import ( "github.com/patrickmn/go-cache" "time" ) type CacheBackend struct { c *cache.Cache errCast error } func (b *CacheBackend) Get(key string) (res string, err error) { if v, ok := b.c.Get(key); ok { if s, ok := v.(string); ok { return s, nil } return "", b.errCast } return "", nil } func (b *CacheBackend) Set(key, value string, ttl time.Duration) error { b.c.Set(key, value, ttl) return nil }