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https://issues.apache.org/jira/browse/MBUILDCACHE-104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17875011#comment-17875011
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Réda Housni Alaoui commented on MBUILDCACHE-104:
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Thinking more about this, I may need to have these zones at the local cache
level in addition to the remote cache level.
So maybe a better way to do this would be to introduce a concept of cache zone
with 2 categories: read/write. A cache zone would mostly materialize as a name
that would be used as subdirectory of the entry checksum directory. With this
in place, the cache zone would propagate naturally to the remote without having
to specify multiple remote url.
> Allow to distinguish 2 kinds of remote cache url: one for read and one for
> write
> --------------------------------------------------------------------------------
>
> Key: MBUILDCACHE-104
> URL: https://issues.apache.org/jira/browse/MBUILDCACHE-104
> Project: Maven Build Cache Extension
> Issue Type: New Feature
> Reporter: Réda Housni Alaoui
> Priority: Major
>
> I have the following use case: a CI pipeline with a compile step *then*
> multiple parallelized test steps. Tests are split in 3 groups. Each test
> group execution specify the group via maven-surefire-plugin:test property
> 'groups'.
> Maven phase for compilation: process-test-classes
> Maven phase for tests: verify
> The compilation should use remote cache as much as possible and end up
> populating it.
> Each test execution should either use the populated cache ending with
> process-test-classes phase or a cache representing the result of the
> execution of the current test group (value for 'groups').
> The issue I have is that this extension can only store a single cache entry
> per input checksum. But I need to persist the build result of each test group.
> The easiest solution I can think of is having 4 remote cache zones. The first
> for the compile phase, the 3 remaining for each test group.
> I need the compile phase to read from the first remote cache zone and *write
> to all remote cache zones*. I need each test group to read/write from/to
> their respective cache zones.
> I propose to split the remote cache configuration between readable cache and
> writable cache and to allow multiple remote writable cache locations.
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