I have an app using bullmq deployed to railway that connects to redis. when I am trying to connect using Redis private network the connection is timing out. I have checked the existing threads and they recommend adding family=0 but that did not work for me.

Then I tried to also check from the container command line and it got the same result:

root@45db4e4c02f3:/app# REDIS_URL_VAR="redis://default:XXXXPASSWORDXXXX@redis.railway.internal:6379?family=0"

root@45db4e4c02f3:/app# node -e "const Redis = require('ioredis'); const r = new Redis("$REDIS_URL_VAR"); r.ping().then(res => {console.log('PING:', res); process.exit(0)}).catch(e => {console.error('Error:', e.message); process.exit(1)})"

[ioredis] Unhandled error event: Error: getaddrinfo ENOTFOUND redis.railway.internal

at GetAddrInfoReqWrap.onlookupall [as oncomplete] (node:dns:122:26)

It is clear that DNS "redis.railway.internal" is not getting resolved. I am able to use the public URL without any issue but would not like to.

How to resolve this? If the DNS resolves the ping test should work.