memcached cache backend with multiple FLOW3 installations will fail
(as reported by Axel Hoogestraat)
The memcached backend (the filecache, as well) will not work properly, if there is more than on FLOW3 installation on a server.
In F3_FLOW3.php, for example, there is the following code: $componentConfigurationsCache->save('baseComponentConfigurations', $componentConfigurations);
The key 'baseComponentConfigurations' will be overwritten, if another FLOW3 installation will save the same key. But the configuration, that should be saved, could be different.
So, a possible solution is to add an prefix to the key, i think. The prefix could be the installation path of FLOW3 or something like an ID, that is configured in the FLOW3 configuration.