Thanks for the insight. Very helpful.
-----Original Message----- From: Sean A Corfield [mailto:[EMAIL PROTECTED] Sent: Thursday, July 24, 2003 3:46 PM To: CF-Talk Subject: Re: CFC's and how they work. On Thursday, Jul 24, 2003, at 10:07 US/Pacific, Rich Z wrote: > I've got a box here at work and it has CFC that is going to get pretty > hard. I'm a bit wary of scalability, which leads me to a few questions: macromedia.com is very CFC-heavy and supports over 15,000 concurrent active sessions during peak morning load so, yes, it can scale. > 1. What does CFMX do about caching CFC's? Does it cache them? Does > it cache them along with parameters? Each CFC and each method within a CFC is converted to a Java class file, just like each CFM file, and that compiled class file is loaded (and cached in memory). As Ray said, the lifetime of each CFC instance is whatever you tell it to be, i.e., depending on how you use and store it. > 2. Let's assume a CFC method requires 3 seconds for output in > testing. Once in production, let's assume that load is significant > enough such that the CFC will be invoked every second. Will the > invocation have to wait for the CFC to finish processing the previous > one? I guess another question I'm asking is - do CFC's support > multi-threading? This is no different to having any CFM page that takes three seconds and still being able to support many concurrent users. > 3. If they don't, is there something I can tweak/change/do to make > them better handle near-simultaneous requests? It depends on how you are trying to use CFCs. If you have stateless CFCs, you can create a single cached issue in application scope and use that instance for all your cfinvoke's. If you have stateful CFCs, you need to manage their lifetimes according to whatever rules the state has - it may be per page, per request, per session. Sean A Corfield -- http://www.corfield.org/blog/ "If you're not annoying somebody, you're not really alive." -- Margaret Atwood ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=4 Subscription: http://www.houseoffusion.com/cf_lists/index.cfm?method=subscribe&forumid=4 FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Signup for the Fusion Authority news alert and keep up with the latest news in ColdFusion and related topics. http://www.fusionauthority.com/signup.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
