Check cache timeout settings
Description
Per https://gitlab.com/gitlab-org/gitlab-ce/issues/33501/
"static assets should be aggressively cached. Avatars, for example have a 5 minute cache timeout which is very short considering how many of them we're loading on GitLab and how infrequently they change."
Proposal
- Investigate the cache timeout settings for static assets, set a guideline to follow and increase the timeout where reasonable according to the guideline.
Links / references
Documentation blurb
(Write the start of the documentation of this feature here, include:
- Why should someone use it; what's the underlying problem.
- What is the solution.
- How does someone use this
During implementation, this can then be copied and used as a starter for the documentation.)