On Mon, 12 Jun 2023 at 18:53, Benjamin Marwell <bmarw...@apache.org> wrote:
>
> Hello everyone!
>
> First of all thank you everyone working on the build cache plugin! It
> is amazing!
>
> At least some of  the following questions seem to be of interest to
> most users and might end up on the documentation, So here's a few
> things which came to my mind.
>
> 1.) Considering I always require PRs in my projects, would setting
> -Dmaven.build.cache.remote.save.enabled=true be a sensible thing only
> for the main branch?

Personally, I would have the main branch always have a full build
without caching to be sure everything works fine but use cache only
for branches/PR :)
That's what we will do at Jetty project.
The build for 12 branch is around 50 minutes with the cache it goes
down to 8/9 minutes (only because something is always rebuilt and
retrigger a few small modules)
The idea is to reduce development/check of PR and use some incremental
build while the main is always fully build especially when the build
has few jdks as target.
But here it's up to you :)

>
> 2.) Can I maybe have  the branch name included in a path to a remote?
> This way I could have a different cache for maintenance branches. Just
> include the branch name into -Dmaven.build.cache.remote.url?

why would need that?
if your branch has different sources (java, pom, etc..) the calculated
hash will be different so the hash key will be simply different no
need to configure a cache URL differently (well except if you want to
clean up caches per branch)

>
> 3.) Can I somehow use option 1 & 2 to make caches available for
> colleagues without making them manually configure the remote URL for
> each branch they are working on?

cache will be used by colleagues' build as long as a module have the
same calculated hash any local differences will have a different
calculated hash

>
> 4.) The docs say there's also XX and XXMM algorithms, but it doesn't
> say WHEN to use them (only that they may leverage performance). Are
> there some example cases or does someone already have some experience
> we could benefit from?


I have yet to see huge differences.
currently with a build already down from 50 minutes to 8/9 minutes not
sure this was my primary goal
So I can't really tell :)

>
> 5.) The section "filtering out artifacts" might want to give a size of
> artifacts which should be regarded as too large, depending on the
> environment probably.
>

definitely depends on your environment.

> Thanks!
> - Ben
>
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