immich/server/src/middlewares/redis-io.adapter.middleware.ts

import { IoAdapter } from '@nestjs/platform-socket.io';
import { RedisClient, createClient } from 'redis';
import { ServerOptions } from 'socket.io';
import { createAdapter } from '@socket.io/redis-adapter';

const pubClient = createClient({ url: 'redis://immich_redis:6379' });
const subClient = pubClient.duplicate();

export class RedisIoAdapter extends IoAdapter {
  createIOServer(port: number, options?: ServerOptions): any {
    const server = super.createIOServer(port, options);
    server.adapter(createAdapter(pubClient, subClient));
    return server;
  }
}