Interesting article, but worth pointing out that core data is not an ORM, but an object graph with facilities for persistence.
Making News Feed nearly 50% faster on iOS
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Re: Making News Feed nearly 50% faster on iOS
#12I really hope Apple will come up with a modern alternative to Core Data; it's neat and all, but it just doesn't feel like it's a good match for most situations. In my own anecdote, we had to show a list of autocompletion items - simple enough. Read XML, write a few hundred entries to a Core Data storage - and this list was relatively static, updated only once a week. A week after release, we got crash reports - the X…
CoreData is really meant for storing the entries that back your table view. Trying to use it as a universal data model seems unintended.
Re: Making News Feed nearly 50% faster on iOS
#13It's pretty interesting to read about this stuff, I'm glad they're making progress. I hope they also work on the app accumulating data that never seems to get purged, or at least add a button to manually purge data.
Re: Making News Feed nearly 50% faster on iOS
#14Is it me or does this article end right when some actual implementation details would have been interesting to see?
Re: Making News Feed nearly 50% faster on iOS
#15I really hope Apple will come up with a modern alternative to Core Data; it's neat and all, but it just doesn't feel like it's a good match for most situations. In my own anecdote, we had to show a list of autocompletion items - simple enough. Read XML, write a few hundred entries to a Core Data storage - and this list was relatively static, updated only once a week. A week after release, we got crash reports - the X…
CoreData is really meant for storing the entries that back your table view. Trying to use it as a universal data model seems unintended.
You might be right that it's best for that, but CoreData pre-dates table views by many years and has always been sold by Apple as a general store for object graphs.
Re: Making News Feed nearly 50% faster on iOS
#16https://www.youtube.com/watch?v=XhXC4SKOGfQ is from the @scale conference last month that goes into more technical details about the architecture. Presented by the same person as the author of the article.
Re: Making News Feed nearly 50% faster on iOS
#17What bothers me about this industry is that if you were to interview for an iOS position at a place like FB and suggest a KISS type solution, say using PONSOs for the data model, you would immediately be shown the door.
You would? Why?
Re: Making News Feed nearly 50% faster on iOS
#18I really hope Apple will come up with a modern alternative to Core Data; it's neat and all, but it just doesn't feel like it's a good match for most situations. In my own anecdote, we had to show a list of autocompletion items - simple enough. Read XML, write a few hundred entries to a Core Data storage - and this list was relatively static, updated only once a week. A week after release, we got crash reports - the X…
Core Data lives in an unfortunate in between world. It's way too complicated for small amounts of data, and it's too slow for large amounts of data. It's useful if you have medium amounts of data, such that you can't reasonably keep everything in memory and rewrite everything to disk for serialization but don't have so much that you start to hit performance problems, but how often are you in a situation like that where you know your data won't grow larger?
Re: Making News Feed nearly 50% faster on iOS
#19What's up with all the Facebook posts ending up at the top of HN lately?
This isn't a Facebook post, it's an iOS development post that happens to be about Facebook's app.
Re: Making News Feed nearly 50% faster on iOS
#20Earlier quoted context omitted.
CoreData is really meant for storing the entries that back your table view. Trying to use it as a universal data model seems unintended.
You might be right that it's best for that, but CoreData pre-dates table views by many years and has always been sold by Apple as a general store for object graphs.
Pre-dates table views? NSTableView dates to the 1990s. Core Data was introduced in 2005.