Can you please clarify in the documentation - if flushExpired() is never called, will the expired data just sit there in the database, or will something else eventually flush it?

From what I can see, there is no automatic, periodic, randomised or sampled call to flushExpired().

However, two clean up strategies exist:

When trying to retrieve a key of which the value is expired, it'll be removed on-demand.
When setting a key and the 5-10MB storage quota is full, the library will remove values (starting with the oldest) to free up the required space.

It may be useful to add something like if (Math.random() < 0.2) { requestIdleCallback( lscache.flushExpired ); } to your page to periodically trigger a clean up on 1/5 page views.

pamelafox / lscache

Can you please clarify in the documentation - if flushExpired() is never called, will the expired data just sit there in the database, or will something else eventually flush it? #57