Astro Shapes Information Technology Blog

If you ever run into a situation where you have deployed an AJAX web application onto multiple servers using round robin DNS and find you are getting horrible performance on Windows and Linux is running great, check your DNS!!

This has bit me a few times and figured it might save someone a ton of aggravation.  Here is the scenario.  Two web application servers each have their own "A" record in the DNS server.  When the browser tries to connect to the web server, it asks the DNS servers for the IP addresses resolved from the host/domain name.

If, for whatever reason, one of the servers is unavailable, Windows does not always do what you would expect.  Here's what was happening to me.
Continue reading "Windows, DNS and AJAX"