I'm testing the cacheAPI with a custom bin. Everything is working. On the other hand, while testing, I created a custom bin with a name that does not suit me.

  class: Drupal\Core\Cache\CacheBackendInterface
    - { name: cache.bin }
  factory: ['@cache_factory', 'get']
  arguments: [lorem_bin]

A table in DB cache_lorem_bin was created.

So I modified it and another table was created with the name of this new custom bin. But the old table cache_lorem_bin was not deleted even after clearing the cache. I don't see in the documentation how to delete this table. It's not blocking but I would like to know how to do it.

1 Answer 1


Cache bin tables are automatically removed when you uninstall the module. You should have uninstalled the module before making the change and after that install the module again.

However, as a developer you can choose to drop the table manually to avoid the reinstall process. The new cache bin table will be created the first time it is used.

  • Uninstalling the module did not delete the tables. I deleted them manually as you told me and everything is ok. I had quite a few and it's much cleaner. May 5, 2023 at 10:06
  • You have to uninstall the old version before the change. It only deletes tables that are still defined in code.
    – 4uk4
    May 5, 2023 at 11:21
  • Thank you, indeed, that's right and it makes sense. May 5, 2023 at 14:13

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