update: readme.md; feat: add flag

pkg/cache/cache.go

@@ -19,6 +19,7 @@ type Cache interface {
 	// SetEx value 会被序列化, 优先使用 MarshalBinary 方法, 没有则执行 json.Marshal
 	SetEx(ctx context.Context, key string, value any, duration time.Duration) error
 	Del(ctx context.Context, keys ...string) error
+	Close() error
 }
 
 type Scanner interface {

pkg/cache/cache.lru.go

@@ -134,6 +134,11 @@ func (l *_lru) Del(ctx context.Context, keys ...string) error {
 	return nil
 }
 
+func (l *_lru) Close() error {
+	l.client = nil
+	return nil
+}
+
 func newLRUCache() (Cache, error) {
 	client := expirable.NewLRU[string, *_lru_value](1024*1024, nil, 0)
 

pkg/cache/cache.memory.go

@@ -103,3 +103,9 @@ func (m *_mem) Del(ctx context.Context, keys ...string) error {
 	m.client.Delete(keys...)
 	return nil
 }
+
+func (m *_mem) Close() error {
+	m.client = nil
+
+	return nil
+}

pkg/cache/cache.redis.go

@@ -104,3 +104,7 @@ func (r *_redis) SetEx(ctx context.Context, key string, value any, duration time
 func (r *_redis) Del(ctx context.Context, keys ...string) error {
 	return r.client.Del(ctx, keys...).Err()
 }
+
+func (r *_redis) Close() error {
+	return r.client.Close()
+}