Chapter 5Performance Tuning
Brent Simmons, creator of NetNewsWire, once shared a story about a user who filed a bug report about the poor start-up performance of NetNewsWire. Upon discussion with that user, he discovered that they had more than 900,000 unread RSS feeds! The lesson I took away from that story is to expect my users to put thousands of times as much data into my applications as I would ever consider reasonable.
While we’re working with Core Data, we need to consider the performance impacts of our design. We might test with a couple of dozen recipes and expect our users to load a couple hundred recipes into our application and test with those expectations. However, our users can’t read our intentions or expectations. As soon as ...
Get Core Data in Objective-C, 3rd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
