How to detect intermittent time out problem in web applications?
Have a n-tire web application and search often times out after 30 secs. How to detect the root cause of the problem?
Asked by: Caroline758 | Posted: 28-01-2022
Log at separation of concerns, in this case at the boundaries of each layer. when you say search, I'd assume that this is a web app where the user is searching for some text.
Is the DB search involved ? Is there a possibility that your garbage collector is kicking in and the search timed out ? Try to log your garbage collection pauses using java command line switches. Later, you can analyse when your JVM was doing GCs. OR you can use a tool like JConsole or JvisualVM.
You can add trace code to log its activities and then look at each operation to see what part times out and why.Answered by: Melissa612 | Posted: 01-03-2022
Use the tool Wireshark.
Install this tool on each tier and watch the http traffic and packets. This worked for me when debugging a time out issue which actually turned out to be an issue with empty SOAP envelopes.
Doing this will at least tell you which tier the issue is with.Answered by: Daisy940 | Posted: 01-03-2022
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