abashmak/go-by-example

go-by-example

A selective tour of Go by example, with emphasis on concurrent programming.

Concepts covered:

• Variable declaration/assignment
• Range looping
• Panic
• Defer
• Shared memory space signaling (work group, channel)
• Go-routines
  • https://go.dev/doc/faq#goroutines
  • https://dev.to/gophers/what-are-goroutines-and-how-are-they-scheduled-2nj3
  • https://granulate.io/blog/deep-dive-into-golang-performance (Threading Model section)

Architecture

This code implements the following simulated data pipeline:

Compiling

go build -o app

Running

1. Start the server: ./app
2. Make sure netcat is installed
3. Send sample TCP packets:

   for ((x=0; x<10; x++)); do echo -e "$x" | netcat localhost 8080 -c && sleep 1; done