feat(server): cluster level event system (#9884)

packages/backend/server/src/base/redis/instances.ts

@@ -1,16 +1,36 @@
-import { Injectable, OnModuleDestroy } from '@nestjs/common';
+import {
+  Injectable,
+  Logger,
+  OnModuleDestroy,
+  OnModuleInit,
+} from '@nestjs/common';
 import { Redis as IORedis, RedisOptions } from 'ioredis';
 
 import { Config } from '../../base/config';
 
-class Redis extends IORedis implements OnModuleDestroy {
+class Redis extends IORedis implements OnModuleInit, OnModuleDestroy {
+  private readonly logger = new Logger(this.constructor.name);
   constructor(opts: RedisOptions) {
     super(opts);
   }
 
+  errorHandler = (err: Error) => {
+    this.logger.error(err);
+  };
+
+  onModuleInit() {
+    this.on('error', this.errorHandler);
+  }
+
   onModuleDestroy() {
     this.disconnect();
   }
+
+  override duplicate(override?: Partial<RedisOptions>): IORedis {
+    const client = super.duplicate(override);
+    client.on('error', this.errorHandler);
+    return client;
+  }
 }
 
 @Injectable()