Here's a quick note from the folks over on DynamicWebPages.de this morning about APC's move to PECL.

George Schlossnagle sent a notes that the APC (alternative PHP Cache) is now available in PECL (only via CVS for now). The speed of moving it to PECL is seen substantially from the increased mmap support as well as a completely revised version of the Optimizers. Rasmus Lerdorf, who had substantial portion of the development, installed APC with measurable success on the Shopping portal portions of Yahoo.

If you've been looking for a nice, clean project to try to help with caching on your site, you might look into APC for your needs. It caches already compiled versions of your scripts so that it reduces that overhead from each page load. APC has been tested under PHP 4.0.3, 4.0.3pl1 and 4.0.4. It currently compiles under Linux and FreeBSD. Patches for ports to other OSs/ PHP versions are welcome.