Concurrency in Go

 

Go has a dedicated concurrency model that makes it particularly useful for applications that require high performance, scalability, and reliability.

Rules

• If you don’t need it, don’t use it.
• Don’t communicate by sharing memory, share memory by communicating.
• Don’t over-engineer things by using shared memory and complicated, error-prone synchronization primitives, instead, use message-passing between go routines so variables and data can be used in the appropriate sequence.

Points

• The fundamentals of concurrency in Go - Goroutines
• Techniques that can be used to write concurrent programs
• Concurrency patterns
• Advantages
• Pitfalls

Sections

Synchronization: Mutexes & WaitGroups

• Mutex
• WaitGroup
• Problems:
  • The Account Balance
  • The Dining Philosophers

Channels

• Introduction
• Select Statement
• Buffered Channel
• Problems:
  • Producer–consumer problem
  • The Sleeping Barber problem