App working fine, but randomly becomes unresponsive for up to 1 minute.
We have a Node.js app deployed which works fine, memory & CPU usage is stable, but we have monitoring setup and we can see that a few times a day it fails to respond. This happens for up to one minute.
What can cause this? This only started happening a week or two ago.
10 Replies
Project ID:
N/AWe had some similar issues on Render, but after moving the codebase to Railway the issue was fixed for atleast a few weeks.
Project ID: ec601a07-d4ed-4e1e-8ab2-5653a269d0f9
Are you logging? You should add some very extensive logging and monitor
This sounds like a code issue given that this issue has persisted across platforms
Yeah we're doing pretty extensive logging
Thing is this issue was resolved for around 2-3 weeks after we moved over to Railway
And has only started to appear recently
Code doesn't crash on, we see nothing else on Railway and no exceptions are logged
Do you log requests + time to complete?
12/04 is when we migrated from Render to Railway
No issues for 2 weeks
Then suddenly we get something similar as on Render just less frequent
And we didn't really make any changes which could cause this
And memory/CPU metrics are stable + not maxed?
This is very odd. Not sure what it could be. This help chat is for Railway help specifically and unfortunately this seems like a code issue, so there's not much I can help you out with here
Render told us it was a code issue as well 😃
Yep
Saw unresponsiveness when CPU usage was like 20%
We do have some spikes here and there but seems like not correlated to unresponsiveness
If I look at commits from the 18th-21st, none changed anything except minor parts of certain routes.
It being a code issue doesn't necessarily mean that a breaking change was introduced in that time period, sounds like you've been having this problem for a while. There are many, many reasons why this could be happening and without full access to your stack, code, logs, etc I wouldn't be able to help. This is definitely a chronic issue with your code/stack.
Given that it's very unlikely that it's an issue with Railway, there isn't much I can do to help you. You'll have to dig into your code and figure it out for yourself.
Thank you for your help.