Training Day4 - adithnaveen/swiggy-2020-july GitHub Wiki

net/http take the data from the server and show host a server (GIN)

Go Routine (fork, pthread, thread) - channel - select

Worker

Testing Benchmarking

---

Google MS Facebook Twitter IBM

W3c they have some recommendation

1xx that the client has made the request 2xx the ack got from the server when successfully done 200 - OK 201 - CREATE 3xx - redirection - 307

4xx - client error - 404 - Page Not Found - 405 - Request Type Mismatch (GET/POST) - 403 - Forbidden 5xx

• server error
• 500 - Internal server error

[{ "userId": 1, "id": 1, "title": "sunt aut facere repellat provident occaecati excepturi optio reprehenderit", "body": "quia et suscipit\nsuscipit recusandae consequuntur expedita et cum\nreprehenderit molestiae ut ut quas totam\nnostrum rerum est autem sunt rem eveniet architecto" }]

struct { Title, UserId }

"title": "sunt aut facere repellat provident occaecati excepturi optio reprehenderit", "userId": 1,

C++/C/Python - fork (Scheduling here called as Preemptive)

.net / Java - Threads

Go - Goroutines - the methods are managed by go routine, there is no hardware intervention, it only software (programmable) - co-operated stack size is growable - shrinkable

---

class MyJob extends Thread {

public void run(){ System.out.println("hl"); } }

class Impl { public static void main(String[] args){ new MyJob().start(); -> will invoke OS for creating a thread } }

without go routine

time go run main.go https://golang.org/ -> text/html; charset=utf-8

https://jsonplaceholder.typicode.com/posts -> application/json; charset=utf-8

https://httpbin.org/xml -> application/xml

go run main.go 0.59s user 0.29s system 42% cpu 2.079 total

go run main.go 0.50s user 0.25s system 138% cpu 0.543 total - go routine

go run main.go 0.60s user 0.28s system 61% cpu 1.424 total - wait group

channels Select