- **status**: review --> in-progress
- **Comment**:

Looking good!

Overall timings are much better with caching enabled. First page hit still can 
be slow, though.  What do you think about updating the cache in `repo_refresh` 
also, not just clearing it up?

Minor issues:

- `print` statements in tests should be removed
- [test 
failures](https://forge-allura.apache.org/p/allura/pastebin/558005106d19cd113afb11b5)

 
SF-specific: I guess we need to add `repo_refs_cache_threshold = .5` to 
`configtree` also.



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** [tickets:#7873] Git branch & tag speedups**

**Status:** in-progress
**Milestone:** unreleased
**Labels:** performance sf-current sf-4 
**Created:** Fri Apr 17, 2015 09:23 PM UTC by Dave Brondsema
**Last Updated:** Mon Jun 15, 2015 12:29 PM UTC
**Owner:** Heith Seewald

I saw that git pages on forge-allura.apache.org were slow, so I looked at 
stats.log and saw that the sidebar was the slowest part.  I did some additional 
digging and found 2 specific areas for improvement:

* in `git_main.py` change `default_branch_name` to a `@LazyProperty` since it 
is called many times inside a loop in `RepositoryApp.sidebar_menu`
* Since `sidebar_menu` only requests a certain number of branches, pass that 
"limit" all the way through to `git_repo.py`'s `branches` method so that 
`is_valid()` is only called a minimum number of times needed.
    * make sure the default branch logic to put it at the top of the list still 
works (e.g. always put it at the top first)

In addition to those changes, generalize and apply the same approach to the 
tags.  And also check ForgeHg to see if mercurial can benefit the same way.


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