Hi all, Recently I've been experimenting with ways to speed up the bootstrap of the Java runtime to support mass virtual hosting.
I thought I'd share my findings here. Here's a summary of the use case: - you're hosting hundreds or thousands of apps, published under corresponding virtual hosts - you can't pre-declare, pre-load and pre-start them all - you need to activate an app when you get a request for it - and clean up its resources after the request has been processed. and the mechanisms I experimented with: - bootstrap the part of the runtime that's independent of any app, once - load the app composite on the first request for it - cache the app composite model - activate/deactivate its components + start/stop them for each request - do that for each HTTP request handled by our ServletHost The good news is that supporting that only involves a few little tweaks to our usual runtime node startup sequence. I'm planning to share that experiment with the community for review there: http://svn.apache.org/repos/asf/tuscany/sandbox/sebastien/java/vhost/ and hoping to help generate ideas to better address this type of use case. I'm really busy at work this week but will try to commit this code when I find some time over the weekend. -- Jean-Sebastien
