You are probably thinking of "Confluence", and yes, memory handling can be a bit of an annoyance. This article contains quite a lot of candy if you want to know more about tuning memory usage for confluence (and most other tomcat applications)
https://confluence.atlassian.com/doc/performance-tuning-130289.html
Hey there,
If you're having problems with the default memory's settings in Confluence, you can increase it by following the steps from this documentation.
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