This adds a middleware for overload protection that is intended to help protect against malicious scrapers.
It does this via [`codel`](https://github.com/bohde/codel), which will perform the following:
1. Limit the number of in-flight requests to some user-defined max
2. When in-flight requests have reached their begin queuing requests.
Logged-in requests having priority above logged-out requests
3. Once a request has been queued for too long,
it has a probabilistic chance to be rejected based on how overloaded the entire system is.
When a server experiences more traffic than it can handle,
this keeps latency low for logged-in users and rejects just
enough requests from logged-out users to not overload the service.
---------
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Giteabot <teabot@gitea.io>
This is a follow-up to https://github.com/go-gitea/gitea/pull/33097.
When linking a submodule at a commit in either the repo view, or a diff
when adding a new submodule, link to the tree view of that submodules
intead of the individual commit. This shows the user the full tree,
instead of the diff of the commit.
This makes the assumption that the tree for a given SHA is at
`<repo_url>/tree/<sha>`. This URL format is supported by both Github &
Gitlab, but not Gitea. To fix this, add a redirect from
`<username>/<repo>/tree/<ref>` to `<username>/<repo>/src/<ref>`, so that
Gitea can support this URL structure.
