A non-persistent adapter, use it in the dev environment, in demo sites, ...
prefix
The prefix to this filesystem (APC 'namespace', it is recommended that this end in a dot '.') (required)ttl
Time to live (default 0)
# app/config/config.yml
knp_gaufrette:
adapters:
foo:
apc:
prefix: APC 'namespace' prefix
ttl: 0