[Sytten]

The comment about Render/Railway gracefully tranferring connections seems weird? I am pretty sure it just kills the service after the new one is alive which will kill the connections. Not some fancy zero downtime reconnect.

[atul-jalan]

It does, but it will generally give a grace period for outstanding requests to resolve prior to killing the service.

It's a good idea for short-lived HTTP requests, but will cause problems for a persistent connection.