53850635-7515-4418-a0d9-f57560f8c9d3

FYI: Variable is named REDIS_URL but it indeed point to the private Redis URL

I got the issue fixed once by deleting and recreating the redis instance but now on every redeploy It will stop working again.

Is it possible that there dangling container somewhere ? I noticed DB connection also go much slower

is this ioredis?

No just redis official client

can you connect to redis locally from it's public url?

I will try that

Now connection seems better since I've switched to public URL

Private URL was always getting rejected

go back to using the private url and then try adding a 3 second sleep to your start script