ios - Reading CoreData managed objects on background thread -


i know coredata not thread safe, , need 1 moc per thread, , using 2 threads (one process incoming updates, 1 feed ui) but... ok read object on different thread like:

nsmanagedobject *mo = fetch object dispatch_async(dispatch_get_global_queue(dispatch_queue_priority_background, 0), ^{       loop on objects in relation, fetch data , cache it.... });

where dispatch_queue_priority_background 1 of default, low, high. i'm getting strange behaviour , perhaps should not doing any background work, if read-only, managed object.

if should not doing this, suggestions on how it? create temporary moc dispatch_async block?


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