Forum Discussion

David_Patino_20's avatar
David_Patino_20
Icon for Nimbostratus rankNimbostratus
May 04, 2012

Instructing BigIP to expire RAM Cache when it receives a URL Query

Howdy Everyone. I've an issue I've been working on. I'm trying to develop a irule that will check the URI::query for an expire entry. If it finds one, it will instruct the system to do a CACHE...
application delivery
dev
devops
iRules
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
May 04, 2012
Who/what is appending the "?expire" string? If there is already a query string in the URI, it would be appended with an ampersand like author.html?page=4&expire. If you want to remove expire from the query string you could use string map: 


if { [string tolower [HTTP::query]] ends_with "expire" } {
log "Request to expire [HTTP::path] received."
set expire_cache_trigger 1

 Remove expire from the query string
HTTP::uri [string range [HTTP::uri] 0 end-7]
}

Aaron