8000 Recommend ruby/setup-ruby's bundler-cache: true option by eregon · Pull Request #514 · actions/cache · GitHub
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Recommend ruby/setup-ruby's bundler-cache: true option #514

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eregon
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@eregon eregon commented Jan 28, 2021

Manually caching gems has many issues:

  • Not working if there is no Gemfile.lock but only a Gemfile
  • Not having the OS version in the key, which might cause binary incompatibility with system libraries of different ABI version.
  • Not taking the Ruby version in account.
  • Not taking the Ruby ABI version of development builds into accounts, which cannot be done with a key, but needs the commit hash.
  • Using restore-keys would grow the cache over time and have extra gems in the cache.
  • Those reasons are summarized in https://github.com/marketplace/actions/setup-ruby-jruby-and-truffleruby#caching-bundle-install-manually

Manually caching gems has many issues:
* Not working if there is no Gemfile.lock but only a Gemfile
* Not having the OS version in the key, which might cause binary incompatibility with system libraries of different ABI version.
* Not taking the Ruby version in account.
* Not taking the Ruby ABI version of development builds into accounts, which cannot be done with a key, but needs the commit hash.
* Using restore-keys would grow the cache over time and have extra gems in the cache.
* Those reasons are summarized in https://github.com/marketplace/actions/setup-ruby-jruby-and-truffleruby#caching-bundle-install-manually
@eregon eregon requested a review from a team as a code owner January 28, 2021 11:59
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@konradpabjan konradpabjan left a comment

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Agree with dropping the example and recommending bundler-cache: true 👍

@konradpabjan konradpabjan merged commit 56a8a2f into actions:main Feb 2, 2021
@dhadka
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dhadka commented Feb 2, 2021

👍 Awesome!

This was referenced Mar 6, 2021
This was referenced Mar 16, 2021
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