set redis

src/redis/redis.module.ts

@@ -0,0 +1,9 @@
+import { Global, Module } from '@nestjs/common'
+import { RedisService } from './redis.service'
+
+@Global()
+@Module({
+  providers: [RedisService],
+  exports: [RedisService],
+})
+export class RedisModule {}

src/redis/redis.service.ts

@@ -0,0 +1,40 @@
+import { Injectable, Logger, OnModuleDestroy } from '@nestjs/common'
+import Redis from 'ioredis'
+
+@Injectable()
+export class RedisService implements OnModuleDestroy {
+  private readonly logger = new Logger(RedisService.name)
+  private readonly client: Redis
+
+  constructor() {
+    const host = process.env.REDIS_HOST || 'redis'
+    const port = Number(process.env.REDIS_PORT || 6379)
+    const password = process.env.REDIS_PASSWORD || undefined
+    const db = Number(process.env.REDIS_DB || 0)
+
+    this.client = new Redis({
+      host,
+      port,
+      password,
+      db,
+      lazyConnect: true,
+      maxRetriesPerRequest: 3,
+    })
+
+    this.client.on('error', (error) => {
+      this.logger.error(`Redis error: ${error.message}`)
+    })
+  }
+
+  async getClient(): Promise<Redis> {
+    if (this.client.status !== 'ready') {
+      await this.client.connect()
+    }
+
+    return this.client
+  }
+
+  async onModuleDestroy() {
+    await this.client.quit()
+  }
+}