Nothing ever works exactly as planned and various techniques and tools as well as an understanding of commonly encountered problems are valuable aids to troubleshooting your web applications.

Enable debug logging

Thread dump

Check memory usage with a heap dump

Check the Classpath

Monitor the HTTP communication

Use an external compiler

Increase OS thread limitations

A list of symptoms and their possible resolution.

Resin stops responding

Resin keeps restarting

java.lang.OutOfMemory exception, application runs out of memory

Sessions become null, losing session

A collection of the FAQ from each section of the Resin documentation.

Features FAQ

Who uses Resin?

Configuration FAQ

Where can I find the .rnc files that Resin uses for validating configuration files?

Security FAQ

Can I use different SSL certificates for each virtual host?