ratelimiter

type RateLimiterConfig struct {
	// Skipper defines a function to skip middleware.
	Skipper echo.Skipper

	// The max count in duration for no policy, default is 100.
	Max int

	// Count duration for no policy, default is 1 Minute.
	Duration time.Duration

	// Prefix key prefix, default is "LIMIT:".
	Prefix string

	// Use a redis client for limiter, if omit, it will use a memory limiter.
	Client RedisClient

	//If request gets a  internal limiter error, just skip the limiter and let it go to next middleware
	SkipRateLimiterInternalError bool

	LimiterKeyGenerator func(c echo.Context) (limiterKey string, policy []int)
}

type RedisClient interface {
	DeleteKey(string) error
	EvalulateSha(string, []string, ...interface{}) (interface{}, error)
	LuaScriptLoad(string) (string, error)
}

type Result struct {
	Total     int           // It Equals Options.Max, or policy max
	Remaining int           // It will always >= -1
	Duration  time.Duration // It Equals Options.Duration, or policy duration
	Reset     time.Time     // The limit record reset time
	Until     time.Duration
}