Session Control Under Web Farm

[jamesmeng]

I am quite new to PHP. Has any one successfully implemented session control under a web farm environment, say by setting session.save to a shared directory under NFS? Is it doable? Performance wise, is it better or worse than registering session variables into a MySQL database? Thanks.

[Anon]

Session replication in PHP is not supported as far as my understanding goes. May be so me third party have implemented. But zend is comming up with ext lib "msession" which is available in Beta version.

I think without this one cannot take the benefits of clustered envt in PHP , but a restricted load balanced implementation where user request are forced to pass thru a first server is possible.

I am also looking some more inputs from users.. Hope to find one some day!

Anand

[[deleted]]

It should be possible to store the sessions in a shared network directory, and there are plenty examples of how to do sessions with a MySQL database.

If the regular sessions don't work, you can always write your own.
All you need is a unique session identifier string, and a place to write and read the variables to and from, like a shared dir or a database. PHP's sessions are not magic, just conventient.