Zodb-cache-size-bytes - still experimental?

[jensens (Jens W. Klein)]

At

plone.recipe.zope2instance

one can read

zodb-cache-size-bytes
    Set the ZODB cache sizes in bytes. This feature is still experimental.

Is this still true?

[fredvd (Fred van Dijk)]

Double clicked somewhere, instead of edit withdrew the post:

Permanently increasing memory consumption by ZEO Clients

We have used the zodb-cache-size-bytes option for a while, but noticed that Plone sites using this would have random slowness in responding to requests when they started hitting the memory limit. So we removed it again, set for monitoring zope process memory usage instead and rotate restarting the zope processes after a few days/week depending on the memory usage trend. Also see this thread on zodb-dev from 10 years ago. https://mail.zope.org/pipermail/zodb-dev/2010-March/013200.html This is …

And follow up posts in that thread

[jensens (Jens W. Klein)]

After all it looks like it is working fine by now. I configured a test DB (with RelStorage 3 as backend, as this is my environment) and I have the limit set to 750MB. Now my sites are all respecting the limit w/o any measurable degrading in performance so far. And my instances are staying all below 1GB.

OT, but that said, latest Relstorage 3 is a big performance boost on its own.

[KrissiK]

The README of plone.recipe.zope2instance still says, that “zodb-cache-size-bytes” is experimental. Are there any news about that?

Is someone using it in production? And is a difference expected in using it with zeo or relstorage?