Start concurrent work with the go keyword and wait for it to finish with sync.WaitGroup.

• Starting Goroutines
• Waiting With sync.WaitGroup

Send values between goroutines with channels, close and range over them, and wait on several at once with select.

• Unbuffered And Buffered Channels
• Closing And Ranging Over Channels
• The select Statement

Protect shared data with sync.Mutex and sync.RWMutex, run setup once with sync.Once, choose between channels and mutexes, and find races with -race.

• sync.Mutex And RWMutex
• sync.Once
• Channel Vs Mutex
• The Race Detector

Fix all goroutines are asleep deadlocks, build worker pools, and run failing tasks concurrently with errgroup.

• Deadlocks And Their Messages
• Worker Pools
• errgroup For Concurrent Tasks