The `date:` metatag depends on the current user's time zone, so the post count for `date:` searches
needs to be cached separately for different users, otherwise it could lead to incorrect page counts
if two users with different time zones search for the same `date:` metatag at the same time.
This directory contains library code used through Danbooru. This includes things like defining API clients, dealing with
sources, parsing tag searches, storing and resizing images, and so on.
Many of the files here use the Service Object pattern. Instead of putting complex code in models or controllers, it goes
here, in plain old Ruby objects (POROs). This keeps models and controllers simpler, and keeps domain logic isolated and
independent from the database and the HTTP request cycle.
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