Re: Shared hashtable

> I'm being asked about the possibility of creating an extension that will > cache some data from a MySQL DB in-memory. I've been reading various > online resources regarding building extensions and cannot find an answer > to the following question... Is there a way to create a hashtable in the > extension which will be available to all of the Apache children without > resorting to shared memory? > You want to *share* something in *memory* between two processes. Yep, ya pretty much need shared memory... > It's important that only one instance of the data exists for two > reasons... 1) It's a fairly large amount of data and 2) it will change as > the application runs. I've created a small test extension using > MODULE_GLOBALS the results of which suggest that these variables are per > process. I'm just looking for some confirmation that shared memory is the > way to go before I jump down that particular black hole. > Yes, Module Globals are per-process (or per-thread if your under a threaded sapi). In either case, these are specifically designed to *prevent* concurrent requests from accessing the same data. -Sara > TIA. > > -Stut