cache

type CacheConfig struct {
	Skipper          middleware.Skipper
	CanCacheResponse middleware.Skipper
	CachePrefix      string
	CacheKey         CacheKeyFunc
	CacheDuration    time.Duration
	Store            store.Store
	Encoder          Encoder
	Metrics          Metrics
}

type CacheKeyFunc func(prefix string, req *http.Request) string

type Encoder interface {
	Marshaler
	Unmarshaler
}

type JSONEncoder struct{}

type Marshaler interface {
	Marshal(r *Response) ([]byte, error)
}

type Metrics interface {
	// The total number of cache hits
	CacheHits()
	// The total number of cache misses
	CacheMisses()
	// The current size of the cache in bytes
	CacheSize(size float64)
	// The time it takes for the middleware to retrieve data from the cache
	CacheLatency(latency float64)
	// The total number of errors encountered while interacting with the cache
	CacheError()
}

type MsgpackEncoder struct{}

type Response struct {
	StatusCode int         `msgpack:"status_code"`
	Headers    http.Header `msgpack:"headers,omitempty"`
	Body       []byte      `msgpack:"body,omitempty"`
}

type Unmarshaler interface {
	Unmarshal(b []byte, v *Response) error
}