Shopware 6.3: Don’t share caches between deployments

We had a problem today and no clue, where it came from. There was no way to reproduce it locally.

PHP Fatal error: Cannot declare interface Doctrine\DBAL\Driver\Connection, because the name is already in use in /var/www/ on line 13

This happens, because we wanted to share the caching directory between deployments. Don’t do that. Maybe this is fixed in 6.4 🤷

A little background: We did that, because we have the problem, that in 6.3 (yes we know, we need to update!) the caching has a memory leak and we write about 100GB of cache a week and no end in sight. Therefore we clean the cache once a week, but today the server stopped working, because the disk was full.

You ask why? Because on every deployment we created a new directory and didn’t delete the cache of the old deployment. So the disk was a lot faster full than expected.

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