Man pages matching name catalyst::plugin::cache::backend::memory in section 3pm:

Catalyst::Plugin::Cache::Backend::Memory.3pm.en	debian 10 / libcatalyst-plugin-cache-perl
Catalyst::Plugin::Cache::Backend::Memory.3pm.en	debian 11 / libcatalyst-plugin-cache-perl
Catalyst::Plugin::Cache::Backend::Memory.3pm.en	debian 12 / libcatalyst-plugin-cache-perl