What exactly causes a status code 499 and how do you fix it? or Has anyone else encountered status co

If you’re using AWS ALB, it might show 499s when the client disconnects.

We solved it by:
- Tweaking idle timeout on the ALB.
- Adding client-side heartbeat pings to keep the connection alive.
- Logging client IPs to see if it’s specific users.

Worth checking ELB access logs too!