Cocoa mail archive
Re: CoreData Best Practices
FROM : Bill Bumgarner
DATE : Sat Apr 30 09:49:04 2005
On Apr 29, 2005, at 4:13 PM, John Timmer wrote:
> I did say that I'm not sure where that would come down on the
> performance/memory use equation, though. I haven't done a multi-
> way search
> on a managed object context with > 10000 objects yet. Anyone know
> how quick
> that is?
>
For XML and Binary, the search will be performed in memory and should
be very quick, depending on the details of the predicate.
However, you can very likely gain a significant performance boost by
using a SQL store in that the query will be optimized down to a SQL
select statement and evaluated within the SQLite engine, which is
quite nicely optimized, itself.
We regularly tested and optimized Core Data against data sets in the
hundreds of thousands and millions of entities range.
If you do find a performance issue, please file a bug.
b.bum
DATE : Sat Apr 30 09:49:04 2005
On Apr 29, 2005, at 4:13 PM, John Timmer wrote:
> I did say that I'm not sure where that would come down on the
> performance/memory use equation, though. I haven't done a multi-
> way search
> on a managed object context with > 10000 objects yet. Anyone know
> how quick
> that is?
>
For XML and Binary, the search will be performed in memory and should
be very quick, depending on the details of the predicate.
However, you can very likely gain a significant performance boost by
using a SQL store in that the query will be optimized down to a SQL
select statement and evaluated within the SQLite engine, which is
quite nicely optimized, itself.
We regularly tested and optimized Core Data against data sets in the
hundreds of thousands and millions of entities range.
If you do find a performance issue, please file a bug.
b.bum
