If we modify one global variable at the same time, is it security?

I'm not sure what you mean by "adding protection", but I would definitely recommend using different variables for your iRules if the variables need to be global. Having multiple rules reading/writing from the same variables can be tricky if they weren't designed to do so.

 

 

Colin

Thanks

 

 

Is it single-thread or multi-thread about global variable in f5?

 

 

:P

If iRules is single threaded, would that mean global variable works in the context of the irule?

Global Variable is stored within the TMM process and is single threaded

It get's more interesting when you deal with multiple TMM processes. :-)

 

 

global variables doesn't work then :'( , will be fixed in later release but don't ask me which ^^