One of the biggest responsibilities of system administrators and DevOps professionals is ensuring networks are always functioning properly. Network configuration management used to be a simple task. Watch resource usage and make the appropriate tweaks when the occasional traffic spike occurred. Since then, the rise of agile principles within the DevOps field has required system administrators to adapt to rapid shifts in their field.

I was recently doing some work related to AWS Cognito, which I wasn’t previously familiar with, and it turns out to be pretty interesting. Stackery has a cloud-based app for building and deploying serverless applications, and we use Cognito for our own authentication. The thing I was trying to do was hard to figure out but easy once I figured it out, so I’ll include some code snippets related to my specific use case.

If you’ve dealt with Lambda functions you may have run across the RequestEntityTooLargeException - * byte payload is too large for the Event invocation type (limit 131072 bytes) AWS Lambda exception that occurs when a function is invoked with too large of a payload. Current AWS Lambda limits are set at 6 MB for synchronous/RequestResponse invocations, and 128 K for asynchronous/Event invocations.