Hey there! We've found the following might help you get unblocked faster:

• 🧵 HTTP Request timeout when waking up

• 🧵 Trying to install discourse from Docker

• 🧵 Service not waking from sleep + HTTP 502 Bad Gateway

• 🧵 Flask app hanging, timing out due to PostrgeSQL connection

If you find the answer from one of these, please let us know by solving the thread!

Do you use third party services? It seems like your service is doing a request that timeout...

If you are using node.js, a single synchronous operation or a blocked Event Loop can cause this. However, that usually spikes the cpu. If cpu was flat, it's more likely the event loop was waiting on a promise that never resolved or a slow external API call. And since cpu was low, your application was likely waiting.

Under normal load, a server accepts a connection in milliseconds. A 5 second delay means the server was running but completely unresponsive to new network traffic.

You should check your database metrics to see if it's causing the bottleneck. Check if active connections hit the limit as well. Or maybe you're calling an external API that's causing this.

I also recommend that you implement timeouts for database queries and external API calls to ensure you aren't awaiting a slow promise without a timeout.