1 Threads, Processes, And Goroutines

Thread

• share memory (virtual address space VAS) & resource
• scheduled independently
• if there are multiple CPUs, they can run simultaneously

Process

• contains multiple threads
• independent VAs

Goroutines

• Go's version of threads
• More lightweight than OS threads
  • OS context switches are expensive
  • Go scheduler switches between goroutines, cheap
• Go runtime
  • assigns goroutines to OS threads
  • manages context switches of threads
  • maintains a queue of goroutines