Goroutines - What, Why and How?

Slides for the talk I gave at the inauguratory session for Golang Gurgaon meetup at Grofers headquarters.

Transcript

1. Goroutines - What, Why and How?
2. Hello! I am Alkesh Srivastava, a machine learning engineer and a Go enthusiast I’m here to help you understand the fundamentals of goroutines You can find me at @_alkesh_
3. Important
4. Concurrency != Parallelism
5. What are Goroutines?
6. Goroutines are just functions that run concurrently with other functions
7. They can be compared to threads, but they are more cheaper
13. Code
14. first(“Wait for me”) //first starts, and we wait second() go first(“Proceed without me”) //first starts second() //no need to wait for first
15. Why Goroutines?
16. I need to worry about the performance, latent deadlocks, race conditions etc. while developing concurrent applications Java programmer
17. I need to worry about the callback spaghetti, not getting callback, getting duplicate callbacks, code readability etc. NodeJS programmer
18. How to use Goroutines?
19. package main import ( "fmt" "time" ) func hello() { fmt.Println("Hi, I'm a goroutine!") } func main() { go hello() time.Sleep(1 * time.Second) fmt.Println("Inside main function") }
20. But why should I Go?
21. Native concurrency Compiles to binary Shallow learning curve Built-in testing framework Awesome community
22. And how should I Go?
23. https://tour.golang.org https://gobyexample.com/ https://astaxie.gitbooks.io/build-web-appl ication-with-golang/
24. Any questions? Thank You!
25. @_alkesh_ alkeshsrivastava.com Find me at