iRule not getting executed for a URI apparently due to it's 6000+ char length

Hi Vivek,

We have confirmed that the regex works fine, it's just that this particular request never hits the Pool selection iRule somehow, hence it keeps landing on random F5 pools

is it random pool or pool selected by previous request in the same TCP connection.

if a request doesn't match condition to assign pool, it will keep previous request assigned pool.

in you irule, can you check if URI length is right with command:

log local0. [string length [HTTP::uri]]

Do you really require regex to match URI instead of starts_with / contains / ends_with commands? Regex must be used only if necessary.

Can you filter on [HTTP::path], [HTTP::query] or on a dedicated query parameter [URI::query [HTTP::uri] myparam]?