README.md

Appendix E: Concurrent programming

This appendix covers the basics of concurrent programming in Go.

Topics covered

• Goroutines and their usage
• Using WaitGroup to synchronize goroutines
• Unbuffered channels for communication between goroutines
• Closing channels to signal completion
• Using select to handle multiple channel operations
• Buffered channels for decoupling goroutines
• Many other widely used concurrency patterns

Sections

Section 1: Goroutines

• Listing E.1: A sequential function
• Listing E.2: Running concurrently

Section 2: Using WaitGroup

• Listing E.3: WaitGroup
• Listing E.4: A safer WaitGroup
• Listing E.5: Using SafeGroup

Section 3: Unbuffered channels

• Listing E.6: Sending and receiving

Section 4: Closing channels

• Listing E.7: Closing a channel
• Listing E.8: Ranging over a channel
• Listing E.9: Close signal coordination

Section 5: Using the select statement

• Listing E.10: Selecting channels
• Listing E.11: Default case

Section 6: Buffered channels

• Listing E.12: Buffered channel
• Listing E.13: Select with timeout
• Listing E.14: Counting semaphore