For a small PHP app I am writing, we need to store a large number of records that have a hash key, and a few simple field values ('host', 'path'). eg:
'4420ffb32a' => array(
'host' => '127.0.0.1',
'path' => 'path/to/resource',
);
What is the best persistent storage for data like this? Would MySQL be the best choice, or is it overkill for such simple data? What would give the best performance?