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** [tickets:#7873] Git branch & tag speedups**
**Status:** review
**Milestone:** unreleased
**Labels:** performance sf-current sf-4
**Created:** Fri Apr 17, 2015 09:23 PM UTC by Dave Brondsema
**Last Updated:** Tue May 05, 2015 02:22 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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