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@svton/nestjs-rate-limit

v2.0.0

Published

NestJS rate limiting module with Redis support (sliding window, token bucket)

Downloads

166

Readme

@svton/nestjs-rate-limit

NestJS 限流模块,基于 Redis,支持滑动窗口、固定窗口、令牌桶算法。

安装

pnpm add @svton/nestjs-rate-limit @svton/nestjs-redis

使用

模块注册

import { Module } from '@nestjs/common';
import { RedisModule } from '@svton/nestjs-redis';
import { RateLimitModule } from '@svton/nestjs-rate-limit';

@Module({
  imports: [
    RedisModule.forRoot({ host: 'localhost', port: 6379 }),
    RateLimitModule.forRoot({
      algorithm: 'sliding-window', // 'sliding-window' | 'fixed-window' | 'token-bucket'
      windowSec: 60,               // 时间窗口 (秒)
      limit: 100,                  // 窗口内最大请求数
      prefix: 'ratelimit',         // Key 前缀
    }),
  ],
})
export class AppModule {}

@RateLimit - 自定义限流

import { Controller, Get, Post } from '@nestjs/common';
import { RateLimit, SkipRateLimit } from '@svton/nestjs-rate-limit';

@Controller('api')
export class ApiController {
  @RateLimit({ limit: 10, windowSec: 60 })
  @Get('data')
  async getData() {}

  @RateLimit({ limit: 5, windowSec: 60, key: 'login' })
  @Post('login')
  async login() {}

  @SkipRateLimit()
  @Get('health')
  async health() {}
}

响应头

限流信息会自动添加到响应头:

  • X-RateLimit-Limit - 总限制数
  • X-RateLimit-Remaining - 剩余请求数
  • X-RateLimit-Reset - 重置时间 (Unix timestamp)

算法说明

| 算法 | 说明 | |------|------| | sliding-window | 滑动窗口,平滑限流,推荐使用 | | fixed-window | 固定窗口,简单高效,可能有边界突发 | | token-bucket | 令牌桶,允许一定程度的突发流量 |

License

MIT