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@svton/nestjs-redis

v1.2.0

Published

NestJS Redis module with connection management and cache service

Readme

@svton/nestjs-redis

NestJS Redis 模块,提供连接管理和轻量级缓存服务。

安装

pnpm add @svton/nestjs-redis

使用

模块注册

import { Module } from '@nestjs/common';
import { ConfigModule, ConfigService } from '@nestjs/config';
import { RedisModule } from '@svton/nestjs-redis';

@Module({
  imports: [
    RedisModule.forRootAsync({
      imports: [ConfigModule],
      inject: [ConfigService],
      useFactory: (config: ConfigService) => ({
        url: config.get('REDIS_URL'),
        // 或者分开配置
        // host: config.get('REDIS_HOST'),
        // port: config.get('REDIS_PORT'),
        // password: config.get('REDIS_PASSWORD'),
        keyPrefix: 'myapp:',
        defaultTtl: 3600,
      }),
    }),
  ],
})
export class AppModule {}

使用 Redis 客户端

import { Injectable } from '@nestjs/common';
import { InjectRedis, Redis } from '@svton/nestjs-redis';

@Injectable()
export class MyService {
  constructor(@InjectRedis() private readonly redis: Redis) {}

  async doSomething() {
    await this.redis.set('key', 'value');
    const value = await this.redis.get('key');
    return value;
  }
}

使用 CacheService

import { Injectable } from '@nestjs/common';
import { CacheService } from '@svton/nestjs-redis';

@Injectable()
export class UserService {
  constructor(private readonly cache: CacheService) {}

  async getUser(id: string) {
    // 尝试从缓存获取
    const cached = await this.cache.get<User>(`user:${id}`);
    if (cached) return cached;

    // 从数据库获取
    const user = await this.findUserFromDb(id);
    
    // 写入缓存(1小时过期)
    await this.cache.set(`user:${id}`, user, 3600);
    
    return user;
  }
}

CacheService API

| 方法 | 说明 | |------|------| | get<T>(key) | 获取缓存值(自动 JSON 反序列化) | | set(key, value, ttl?) | 设置缓存值(自动 JSON 序列化) | | del(key) | 删除缓存 | | delByPattern(pattern) | 批量删除(支持通配符) | | exists(key) | 检查 key 是否存在 | | expire(key, ttl) | 设置过期时间 | | ttl(key) | 获取剩余过期时间 | | incr(key) | 自增 | | decr(key) | 自减 |

配置选项

| 选项 | 类型 | 说明 | |------|------|------| | url | string | Redis 连接 URL | | host | string | Redis 主机 | | port | number | Redis 端口 | | password | string | Redis 密码 | | db | number | 数据库索引 | | keyPrefix | string | 缓存 key 前缀 | | defaultTtl | number | 默认 TTL(秒) |