Manually Concurrency Programming (not swift-concurrency) | Notion

Modernizing Grand Central Dispatch Usage - WWDC 2017 - Videos - Apple Developer

Concurrent Programming With GCD in Swift 3 - WWDC 2016 - Videos - Apple Developer

Mastering Grand Central Dispatch - WWDC 2011 - Videos - Apple Developer

System Trace in Depth - WWDC 2016 - Videos - Apple Developer

Concurrency in Swift: Reader Writer Lock

Leaky abstractions in Swift with DispatchQueue

Introducing Swift Atomics

GCD - efficient way to use

Making efficient use of the libdispatch (GCD)