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kotlinlang

We've started seeing a condition on our Ktor microservices where all attempted requests hang indefinitely without returning response. On dumping stack traces for the app, we see a thread that appears to be stuck parsing JSON: <https://gist.github.com/mattrussell-sonocent/6a6862354cfa7728b708318ba75eb536>
Our corresponding app code is:
```val credentials = call.receive&lt;Credentials&gt;()```
A `netstat -a` reveals a whole bunch of other waiting HTTP connections that don't get a chance to be served.
After 5-10 minutes, the server recovers without intervention.
Any ideas on what's going on or how to diagnose?