Yet another language ?

Why they built a new language ?

• Efficient Compilation

• Efficient Executions

• Ease of Programming

• Support Multicore

And who got attracted ? 

Let us see what attracted these big shots

 

What made golang so special ?

What makes a language adoptable ?

 

• Easy learning curve
• Cross platform
• Performance
• Support for programming practices
• Supported paradigms

 

 

• Strong library base
• Security
• Good community
• Low memory footprint
• Easy deployment

 

Easy to Learn

Built-in Libraries

• web server

• http, url, smtp

• json, xml

• database/sql

• os

• time

• testing

• log

• crypto

• html

• image

• sync

Easy to deploy

What is the secret sauce?

Language Features

• variables

• functions

• structs

• errors

• recovery

• interface

• reflection

• garbage collection

Tools

• go fmt

• go vet

• go test

Code kata

fundamentals

Let's take a break

Concurrency vs Parallelism

Concurrency

Ticket Booking Scenario

• Block Tickets in DB

• Cancel other requests

• Send e-mail

• Send SMS

Parallelism

Ticket Booking Scenario

1000s of users booking tickets at the same time 

 

 Tuesday Nights ;)

Rob Pike's Talk

https://www.youtube.com/watch?v=cN_DpYBzKso

Go is a concurrent programming language

goroutines are super fast

It leverages the cost of context switching

Context switch in OS Threads

• Save / restore all registers

• 16 general purpose registers

• PC (Program Counter)

• SP (Stack Pointer)

• Segment registers

• 16 XMM registers

• FP coprocessor state

• All MSRs etc. 

Context switch in goroutines

• Save / restore Program Counter, PC

• SP, Stack Pointer

• DX (Destination Registers)

Channels

Code Kata

goroutines

Useful Links

https://tour.golang.org

 

https://gobyexample.com/

 

http://golangweekly.com/

 

https://golang.org/doc/effective_go.html

 

http://play.golang.org

 

https://groups.google.com/forum/#!forum/golang-nuts

 

Questions ?

Feedback

https://arvindram.typeform.com/to/WyFu95

Thanks for your time