Bug: Error 502 Bad Gateway on large requests for file invalidation server

[juanpablosalas]

Bug Description

The file invalidation server will show a 502 Bad gateway when a request is sent with a large number of files (~ >800). The invalidation request is correctly generated after a few minutes according to the container logs but this leaves the user clueless.

Reproduction Steps

1. Send a large request (>1000 files) to https://file-invalidation.app.cern.ch/api/upload/ in dry_run_mode
2. After a while loading the screen will show 502 Bad gateway error

Expected Behavior

Show a specific error message to the user if needed.

Possible Solution

Handle the post request in batches or use a loading page.

Related Issues

No response