Mastering Concurrency in iOS - Part 2 (Dispatch Queues, Quality of Service, Attributes)

In this video, I have discussed Dispatch Queues in detail. System provided queues, custom queues, main queue, Quality of Service, why QoS was introduced, attributes like concurrent, initiallyInactive.
Apart from these, a little advanced concepts like target queue, and auto release frequency have also been discussed.

00:00 Start
1:50 Main Queue
3:32 Global Concurrent Queues
7:47 Quality of Service
17:57 QoS in Action (code)
23:04 Attributes
24:03 Target Queue
28:28 Target Queue in Action (code)
33:36 Auto Release Frequency
39:44 Custom Queue using Main Thread