Mailing List Archive: repository defaults

Hi,

I have some questions about git repositories.
<https://trac.edgewall.org/wiki/TracRepositoryAdmin#Repositorycaching>
indicates that a git repository is cached by default. However, if I add a
git repository to a new trac environment, when I do a resync I get a "0
revisions cached." message. I assume this means that caching, at least for
git, does in fact default to false. Is this correct?

If git repositories do indeed default to cached=false, under what
circumstances should I consider enabling caching?

Is there some way to view the entire trac configuration (not just the
trac.ini file)? I noticed that there doesn't see to be a trac-admin
repository get command. How can the cached state be queried?

thanks,
galen

Ubuntu 21.10
trac 1.5.3+dfsg-1
python 3.9.7
apache2 2.4.48-3.1ubuntu3.3

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On Friday, March 18, 2022 at 10:41:47 AM UTC-7 galens wrote:

> Hi,
>
> I have some questions about git repositories. <
> https://trac.edgewall.org/wiki/TracRepositoryAdmin#Repositorycaching>
> indicates that a git repository is cached by default. However, if I add a
> git repository to a new trac environment, when I do a resync I get a "0
> revisions cached." message. I assume this means that caching, at least for
> git, does in fact default to false. Is this correct?
>

That statement is incorrect. I've edited the page accordingly. Good find!
https://trac.edgewall.org/wiki/TracRepositoryAdmin?action=diff&version=53

The default config values are shown here:
https://trac.edgewall.org/wiki/TracIni#git-section

> If git repositories do indeed default to cached=false, under what
> circumstances should I consider enabling caching?
>

It's more work to set up caching, but the performance will be better. So
definitely if you will have concurrent access to the website and need
reasonable performance. Setup a post-receive hook otherwise Trac will "sync
on request", which can slow the page load time.
https://trac.edgewall.org/wiki/TracRepositoryAdmin#Git

The reason is that the synchronization is not done asynchronous with the
page processing, although I suppose that would be easier to do with the new
async functionality in Python3:

https://trac.edgewall.org/wiki/TracRepositoryAdmin#PerRequestSync

There are two caching options that work together. There should probably be
only one, but it's an artifact of early development of the plugin. I doubt
there is a use-case in which you would not enable the persistent_cache if
you've done the work to setup the repository hooks,

[git]
cached_repository = enabled
persistent_cache = enabled

> Is there some way to view the entire trac configuration (not just the
> trac.ini file)?
>

The /about page will show you the Trac configuration if you have
CONFIG_VIEW (or TRAC_ADMIN).

> I noticed that there doesn't see to be a trac-admin repository get
> command. How can the cached state be queried?
>

$ trac-admin $ENV config get git cached_repository
disabled

Ryan

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