Enable transport compression for backend API

[Rotzbua]

Problem

The API does not compress the (json) response. This leads to high traffic and increased loading times.

Example

Statistics URL: https://w3champions.com/OverallStatistics/

API Requests:

• https://website-backend.w3champions.com/api/w3c-stats/map-race-wins

  • Traffic 2.769 KiB
  • Potential saving: 2.284 KiB

• https://website-backend.w3champions.com/api/w3c-stats/games-per-day

  • Traffic: 490 KiB
  • Potential saving: 460 KiB

Source test result: https://pagespeed.web.dev/analysis/https-w3champions-com-OverallStatistics/7jpdz9z2je?form_factor=mobile

Possible solution

A) Enable compression at the proxy

https://github.com/w3champions/website/blob/76c877ee9247bb39a20882469c8db470f2331714/docker-compose.token.yml#L23-L26

Remove compression by frontend container: https://github.com/w3champions/website/blob/master/gzip.conf

B) Use Cloudflare (uses compression by default)

Reference

https://developer.chrome.com/docs/lighthouse/performance/uses-text-compression/