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So, we went live with a new m2 shop last week. It all worked well in our develop environment. Since we dockerized the m2 installation, I wasnt expecting much trouble. But our redis cache keeps growing (pretty fast: about 3MB/s). I have a small workaround in place, so the server does not run out of memory. I set the maxmemory to 4GB in a cronjob (every 5 minutes), because even with the limit and memory-policy in place, the redis container crashes from time to time. It also restarts, but then the cronjob needs to set the values again.

I know, there was a problem in 2.4.2 with the CSP module (see issue), but I disabled the CSP Module and we are running 2.4.3.

Also I found this question, but it wast really helpfull.

Is anyone else experiencing this behaviour? Oh, and for the record: I have tested redis 6.0 and 6.2 - but the behaviour stays the same. The server has 16GB of memory in total.

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  • Have you considered trying to run without Redis?
    – Wilson Hauck
    Commented Jul 9, 2022 at 22:01
  • You may find this URL helpful. lexiconn.com/blog/2017/11/… We provide MySQL and MariaDB performance tuning services which could simplify your life. View profile for contact info and free Utility Scripts, please.
    – Wilson Hauck
    Commented Jul 9, 2022 at 22:05
  • Without redis, the storage gets full after some time - so, the problem stays the same. It seems, it is a known bug in 2.4.3 and should get fixed in 2.4.4. For now, as our environment is running in docker containers, I restrained the redis containers use of RAM and set maxmemory to 4GB and maxmemory-policy to allkeys-lru
    – Mario
    Commented Jul 12, 2022 at 9:11
  • Has anyone reviewed your code responsible for 'Connect', 'Process', 'Close' connection? Sounds like CLOSE has been missed.
    – Wilson Hauck
    Commented Jul 12, 2022 at 18:12
  • I am not using any self-written code to connect to redis. I might face this issue: github.com/magento/magento2/issues/9458 It should be fixed with 2.4.4 (but I have not tried yet)
    – Mario
    Commented Jul 12, 2022 at 18:59

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