Danie Qian wrote: > >> >> With this patch, setting DBDTimout lower than the MySQL system variable >> 'wait_timeout' will ensure than expired connections never get used. >> > > Assuming by DBDTimeout you mean DBDExptime in mod_dbd documentation > where it implies a keepalive value, how about making mod_dbd to send > something to mysql server so that its wait_timeout timer gets reset > whenever the keepalive time elapses? Is this what the setting originally > meant for? > As I am pretty new to this listing and I apologize if I am not on the > same page as you guys. >
Yes, sorry - you are correct. I did mean DBDExptime. I slipped up translating the APR lingo to the mod_dbd lingo... re "not on the same page" - I didn't think that at all. If you're new to this, you sure catch on quick! The patch I proposed is not just for MySQL. I don't use MySQL myself (although I tested the patch with it anyway). The problem with "send something to mysql server" is that it is a MySQL-only solution to the problem. I was trying for a more general solution since this affects other databases too. As an aside - I have an apr_dbd_odbc driver: http://code.google.com/p/odbc-dbd/ which I use with several different kinds of databases. This is what I used to test the patch. I don't know if the APR folks will like my proposed patch - they might not. You are welcome to use it, but you probably won't want to use it in production until they decide. A better short-term MySQL-only solution would be a change to apr_dbd_mysql like the one Nick Kew suggested. -tom-
