The best concurrency API to use in Objective-C depends on the specific requirements of your application, but in general, NSOperationQueue is often the most convenient and safest choice for most application developers[4].
Grand Central Dispatch (GCD) is a low-level C API that provides a powerful and efficient way to manage concurrent operations[4]. It uses a pool of threads to execute tasks submitted to dispatch queues[1]. While GCD offers more low-level control, it still requires careful consideration of concurrency challenges like deadlocks and race conditions[3].
NSThread allows you to directly create and manage threads, but this approach has some drawbacks[4]. Manually creating and managing threads can lead to issues like creating too many threads and tying up system resources[4]. It also requires you to handle concurrency challenges directly.
NSOperationQueue is a higher-level Cocoa abstraction built on top of GCD[4]. It provides a convenient object-oriented interface for encapsulating asynchronous work as NSOperation ob...
