Re: APC & __autoload & webclusters

On Thu, February 21, 2008 9:27 am, Jochem Maas wrote: > 1. __autoload & APC > > I have been STW to try and find a definitive answer as to whether > using __autoload with APC > is a bad idea ... and if so why? ... I can't find that definitive > answer, can anyone here > state whether this it's an absolutely bad idea to use __autoload with > APC? (I need to > speed up an app that currently loads in pretty much everything on > every request ... and it's > impossible to untangle the class interdependencies, in the time I > have, and thereby load only > what is absolutely needed, when it's needed ... so I want to give > __autoload() a shot in order > to minimize what classes are loaded. If it's that inter-tangled, then I would hazard a WILD GUESS that the __autoload will still end up loading everything... > 2. webclusters & APC > > I'm building a load-balanced cluster for the same app ... a certain > times new data is imported > from a thirdparty system after which some APC cached data needs to be > cleared, in the same vein > I occasionally roll out a new version and then the APC opcode cache > needs to be cleared (each webserver > in the cluster has it's own APC cache obviously). > > now I'm stuck with the problem of how to trigger the cache clearance > on all servers ... Greg Donald > already mentioned the ruby based capistrano for executing commands on > multiple remote servers and I'll > be using that to manage things like cache clearance, webserver > restarting, etc on all the webservers > > ... BUT I have found that it is not possible to control the APC cache > of php_mod from the CLI version of > php, they apparently use different APC caches. it seems that the only > way to control the APC cache of > mod_php is via a web interface. APC ships with the very handy apc.php > script but this is hardly a decent > way of controlling/clearing the APC cache of multiple machine > programmatically. > > Am I stuck with one of: > > 1. doing a graceful restart of all servers (which causes APCs cache to > disappear)? Yes, that should work. > 2. writing a cmdline script that performs a URL request to a copy of > apc.php that is reachable via each > webserver in order to clear/manage the APC cache? Yes, but obviously password-protect it to avoid DOS. > or is there another way that I can control the webserver's APC cache > from the cmdline? One would think there would be some kind of USR_* signal that can be sent through Apache to APC to clear cache... -- Some people have a "gift" link here. Know what I want? I want you to buy a CD from some indie artist. http://cdbaby.com/from/lynch Yeah, I get a buck. So?