Learning Core Data for iOS: A Hands-On Guide to Building Core Data Applications

Improving Performance

A reduced fetched results size helps improve performance. Beyond setFetchBatchSize, there are other NSFetchRequest options you can use to minimize the result set. Not all options are appropriate to all situations:

Use setFetchLimit and setFetchOffset to reduce fetch results to a specific number of rows starting from a specific point. This may, for example, be appropriate for an application using a Page View Controller to display information. Each page could have a different fetch offset and possibly the same fetch limit.

Use setPredicate to reduce the result set according to the supplied predicate. If you’re supplying a ...