Why is AJAX posting the same query twice?

dmclean

Description of problem: I was watching the network activity in my browser and I see that DataTable is posting the same query twice (different "draw" and "_" parameters but otherwise identical).

What could be causing the duplicate queries? Since the queries are DB queries which could take significant time, I would like to eliminate the second query if possible.

kthorngren

Good question. That doesn't happen by default. Sounds like you have server side processing enabled and a piece of code calling draw() causing the second request. Can you post your relevant Datatables code so we can see what you have? Better is a link to a test case showing the double ajax request problem.
https://datatables.net/manual/tech-notes/10#How-to-provide-a-test-case

Kevin