nestjs-redis-example-1

app.controller.ts

import { Body, Controller, Get, Put } from '@nestjs/common';

import { AppService } from './app.service';

@Controller('/hello')
export class AppController {

    constructor(
        private readonly appService: AppService,
    ) {}

    @Put()
    async putHello(@Body() { name }: { name: string }): Promise<string> {
        await this.appService.setHello(name);
        return name;
    }

    @Get()
    getHello(): Promise<string> {
        return this.appService.getHello();
    }
}

app.module.ts

import { CACHE_MANAGER, CacheModule, Inject, Module, OnModuleDestroy } from '@nestjs/common';
import * as redisStore from 'cache-manager-ioredis';
import { Cache } from 'cache-manager'

import { AppController } from './app.controller';
import { AppService } from './app.service';
import { Redis } from 'ioredis';

@Module({
    imports: [
        CacheModule.registerAsync({
            useFactory: () => {
                return {
                    store: redisStore,
                    host: 'localhost',
                    port: 6379,
                }
            },
        }),
    ],
    controllers: [
        AppController,
    ],
    providers: [
        AppService,
    ],
})
export class AppModule {}

app.service.ts

import { CACHE_MANAGER, Inject, Injectable } from '@nestjs/common';
import { Cache } from 'cache-manager';

const KEY = 'hello';

@Injectable()
export class AppService {

    constructor(
        @Inject(CACHE_MANAGER) private readonly cache: Cache,
    ) {}

    async setHello(name: string): Promise<void> {
        await this.cache.set(KEY, name, { ttl: 3600 });
    }

    async getHello(): Promise<string> {
        const name = await this.cache.get(KEY) || 'matthieu';
        return `Hello ${name}!`;
    }
}