forked from https://github.com/symfony/symfony
c7cd08aa6e
This PR was merged into the 4.4 branch.
Discussion
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[Cache] fix eventual consistency when using RedisTagAwareAdapter with a cluster
| Q | A
| ------------- | ---
| Branch? | 4.4
| Bug fix? | yes
| New feature? | no
| Deprecations? | no
| Tickets | -
| License | MIT
| Doc PR | -
Right now, if the Symfony app stops in the middle of the invalidation logic, we lose the keys to invalidate.
This PR fixes the invalidation logic by making it eventually consistent, and also more scalable thanks to using `SSCAN` instead of `SMEMBERS` when iterating over the items to delete.
The eventual consistency happens when the same tag is invalidated again. We could improve this eg by garbage collecting also when saving and deleting an item but I'll let this as an exercise for a future contributor :)
/cc `@andrerom` in case you'd like to have a look.
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| UPGRADE-5.0.md | ||
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