limiter

Documentation

Index

• Variables
• func New(config ...Config) fiber.Handler
• type Config
• type FixedWindow
  • func (FixedWindow) New(cfg Config) fiber.Handler
• type Handler
• type SlidingWindow
  • func (SlidingWindow) New(cfg Config) fiber.Handler

Variables

var ConfigDefault = Config{
	Max:        5,
	Expiration: 1 * time.Minute,
	KeyGenerator: func(c fiber.Ctx) string {
		return c.IP()
	},
	LimitReached: func(c fiber.Ctx) error {
		return c.SendStatus(fiber.StatusTooManyRequests)
	},
	SkipFailedRequests:     false,
	SkipSuccessfulRequests: false,
	LimiterMiddleware:      FixedWindow{},
}

ConfigDefault is the default config

Functions

func New

func New(config ...Config) fiber.Handler

New creates a new middleware handler

Types

type Config

type Config struct {
	// Store is used to store the state of the middleware
	//
	// Default: an in memory store for this process only
	Storage fiber.Storage

	// LimiterMiddleware is the struct that implements a limiter middleware.
	//
	// Default: a new Fixed Window Rate Limiter
	LimiterMiddleware Handler
	// Next defines a function to skip this middleware when returned true.
	//
	// Optional. Default: nil
	Next func(c fiber.Ctx) bool

	// A function to dynamically calculate the max requests supported by the rate limiter middleware
	//
	// Default: func(c fiber.Ctx) int {
	//   return c.Max
	// }
	MaxFunc func(c fiber.Ctx) int

	// KeyGenerator allows you to generate custom keys, by default c.IP() is used
	//
	// Default: func(c fiber.Ctx) string {
	//   return c.IP()
	// }
	KeyGenerator func(fiber.Ctx) string

	// LimitReached is called when a request hits the limit
	//
	// Default: func(c fiber.Ctx) error {
	//   return c.SendStatus(fiber.StatusTooManyRequests)
	// }
	LimitReached fiber.Handler

	// Max number of recent connections during `Expiration` seconds before sending a 429 response
	//
	// Default: 5
	Max int

	// Expiration is the time on how long to keep records of requests in memory
	//
	// Default: 1 * time.Minute
	Expiration time.Duration

	// When set to true, requests with StatusCode >= 400 won't be counted.
	//
	// Default: false
	SkipFailedRequests bool

	// When set to true, requests with StatusCode < 400 won't be counted.
	//
	// Default: false
	SkipSuccessfulRequests bool
}

Config defines the config for middleware.

type FixedWindow

type FixedWindow struct{}

func (FixedWindow) New

func (FixedWindow) New(cfg Config) fiber.Handler

New creates a new fixed window middleware handler

type Handler

type Handler interface {
	New(config Config) fiber.Handler
}

type SlidingWindow

type SlidingWindow struct{}

func (SlidingWindow) New

func (SlidingWindow) New(cfg Config) fiber.Handler

New creates a new sliding window middleware handler