Memory leak in a Java web application

Question

I have a Java web application running on Tomcat 7 that appears to have a memory leak. The average memory usage of the application increases linearly over time when under load (d

Answer 1

By accident, I stumbled across the following lines in our Tomcat's conf/catalina.properties file that activate String caching. This might be related to your case if you have any of them turned on. It seems others are warning to use the feature.

tomcat.util.buf.StringCache.byte.enabled=true
#tomcat.util.buf.StringCache.char.enabled=true
#tomcat.util.buf.StringCache.trainThreshold=500000
#tomcat.util.buf.StringCache.cacheSize=5000