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Brad_Baker's avatar
Brad_Baker
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Aug 11, 2016

Persist based on query string

Our QA team needs a way to specify a backend node via a query string and have all subsequent queries persist to that node for testing purposes. I have written the following irule which send the re...
application delivery
BIG-IP
iRules
node
persistence
Brad_Baker's avatar
Brad_Baker
Icon for Cirrus rankCirrus
Aug 11, 2016

You're right that persistence doesn't seem to be required for this to work but the issue I mention above still exists. So for example:

1st Request

 URL: index.php?server=web-server1

 Resource: index.php
 Served by: web-server1

 Resource: mylogo.jpg
 Served by: web-server2

 Resource: index.css
 Served by: web-server2

2st Request and subsequent requests (refresh)

 URL: index.php?server=web-server1

 Resource: index.php
 Served by: web-server1

 Resource: mylogo.jpg
 Served by: web-server1

 Resource: index.css
 Served by: web-server1

I'm assuming this behavior is perhaps due to chrome and other browsers making parallel requests and thus even though I've set a pool member it doesn't honor it for all requests until I refresh a second time? If so I'm wondering if that's avoidable anyway?