In Go, creating goroutines is straightforward, but improper usage may result in a large number of goroutines unable to terminate, leading to resource leakage and memory leaks over time. The key to avoiding goroutine leaks is to manage the lifecycle of goroutines properly. By exporting runtime metrics and utilizing pprof, one can detect and resolve goroutine leakage issues.This post will go through one real case encountered by the author. The author maintains a service that connects to a target machine via SSH and executes commands. This is an internal service that is usually not closely monito...

Casual TalkGolang is quite enjoyable to write, aside from the tedious if err != nil checks. One of the fundamental reasons for the joy is goroutine, a core feature of Golang. Understanding goroutines in detail is worthwhile, as they contribute significantly to the pleasure of working with Golang. So, let's talk about goroutines, hoping to provide some insights to the readers.TL;DR: We'll start by talking about assembling a computer, then delve into some concepts of the operating system, such as processes and threads, before exploring goroutines themselves.Assembling a ComputerLet's focus on de...

A worker pool is a pool where a specified number of workers(usually goroutine) created and run to pick up tasks. This can allow multiple tasks to be ran at the same time while keeping the number of workers a fixed number to avoid overuse of resource in the program.There are usually two approaches of creating worker pool.One is with fixed number of workers pre-createdOne is creating worker when needed until the max number of workers createdIn this post, we will cover the demonstration of creating fixed number of workers pre-ahead. This approach is usually used when one knows there are lots of t...

GoLang is a strong typed language which means it is less flexible than interpreted languages by nature. But Go provides Any type(interface) and Reflect mechanism which make the language very close to interpreted languages on flexibility. More and more people start to learn GoLang.This post is mainly for listing down some of the advantages and disadvantages of GoLang.AdvantagesPerformance(Machine code)GoLang is a compilation language which can be compiled to machine code and the compiled binary can be directly deployed to target machine without extra dependency. The performance is better than t...