I have a nodejs/ExpressJS/Mongodb/Mongoose app hosted on aws elasticbeanstalk. The problem is elasticbeanstalk health degrades randomly ( no specific times ), that happens because any request that requires database interaction results the following in logs:
*1360931 upstream timed out (110: Connection timed out) while reading response header from upstream
This happens no matter how much data I try to load. it happens with the least amount of data, this can last from a minute up to 20 minutes and it works again on its own, it is completely random. And I can force it to work immediately by restarting the environment ( I connect to mongodb using connection string on app startup ).
While other requests that don't require database interaction work 100%.
The thing is while database queries aren't working , I can connect to the same database from localhost and database requests work like a charm, they even work really fast.
What is even more strange is I have 4 other identical apps with the same setup, and This situation doesn't occur with any of them, only this app faces this problem !
What is the problem here ?