About GitLab's 503 Error

We are currently operating the latest version of GitLab.
It is 4 core CPU, memory 4GB.
That Gitlab will return 503 errors as time goes on.
Also, if you update the wiki after editing, 503 will always be returned.
I am glad if you can help me because I can not operate properly and I am in great trouble.
We will publish as much of the missing information as possible.
Thank you.

Hey @mercurius51, welcome to the forum!

As our docs mention, we recommend that you have at least 8GB of RAM (RAM + swap) on self-managed installations of GitLab in order for them to run properly. It sounds like your instance is likely being resource starved.