Multitenancy and memcache namespace in PHP on GAE

Question

Is it possible to set namespaces in memcache when using PHP on Google App Engine?

I have a project that is successfully using different databases according to the hostname (e.g., sub1-dot-myapp.appspot.com vs sub2-dot-myapp.appspot.com), but the visible results are mixed due to memcache objects being served across hostnames and instances. If I can assign the hostname as a namespace, or even a key prefix, that should fix it, but I can't find a way to do this in the PHP runtime.

I am not familiar with GAE, but I assume google must have some way of delineating keys between accounts, if not running separate instances of memcached, so if you can't figure anything else out you can try that — A_funs

Stuart Langley Stuart Langley · Accepted Answer · 2014-11-27T04:11:17

No, because the memcache implementation in App Engine follows the standard memcache/memcached APIs that are part of PHP, which do not support namespaces.

Seems like a good feature request, you can add it here.

Multitenancy and memcache namespace in PHP on GAE

1 Answers