Nestjs Rate Limiter

Nestjs Rate Limiter is a module for Nestjs that provides a rate limiter for Express, Fastify, Microservice, ExpressGraphql, and FastifyGraphql.

Installation

$ npm install --save @risy/nestjs-rate-limiter

Basic Usage

app.module.ts

import { RateLimiterModule } from '@risy/nestjs-rate-limiter';

@Module({
    imports: [
        RateLimiterModule.forRoot({
            framework: 'Express',
            keyPrefix: 'global',
            points: 10, // 10 requests
            duration: 60, // per 1 minute by IP
            errorMessage: 'Too many requests, please try again later.',
            logger: true,
            redis: {
                host: 'localhost',
                port: 6379,
            }
        })
    ],
})

export class AppModule  {}

Use For All Routes

app.module.ts

import { RateLimiterModule } from '@risy/nestjs-rate-limiter';

@Module({
    imports: [
        RateLimiterModule.forRoot({
            ...
        })
    ],
    providers: [
        {
            provide: APP_GUARD,
            useClass: RateLimiterGuard
        }
    ]
})

Use Guard

app.controller.ts

import { Controller, Get } from '@nestjs/common';
import { UseGuards } from '@nestjs/common/decorator';
import { RateLimiterGuard } from '@risy/nestjs-rate-limiter';

@Controller()
export class AppController {
  @UseGuards(RateLimiterGuard)
  @Get()
  getHello() {
    return 'Hello World!';
  }
}

Use Decorator For Specific Routes

app.controller.ts

import { Controller, Get } from '@nestjs/common';
import { RateLimiter, RateLimiterGuard } from '@risy/nestjs-rate-limiter';

@Controller()
@RateLimiter({ keyPrefix: 'my-controller', points: 5, duration: 60, errorMessage: 'Too many requests, please try again later.' })
export class AppController {
  @UseGuards(RateLimiterGuard)
  @Get()
  getHello() {
    return 'Hello World!';
  }
}

Options

export interface RateLimiterOptions {
    framework: 'Express' | 'Fastify' | 'Microservice' | 'ExpressGraphql' | 'FastifyGraphql'
    redis?: {
        host: string
        port: number
    }
    keyPrefix?: string
    points: number
    duration: number
    errorMessage?: string
    logger?: boolean
}