Blog — fanzru

2026

Go 1.27 Recap: Generic Methods, JSON v2, and uuid

Methods can finally have their own type parameters, encoding/json runs on v2, UUIDs are in the standard library, and goroutine leak detection is ready.

#golang #go-recap #generics

Oct 214 min read

Go 1.26 Recap: Green Tea GC Is On

A new garbage collector by default, new(expr), errors.AsType, and go fix that modernizes your code. Go 1.26 in five minutes.

#golang #go-recap #performance

Oct 214 min read

Go 1.25 Recap: Container-Aware by Default

GOMAXPROCS finally respects your container CPU limit, WaitGroup gets a Go method, and testing concurrent code gets a fake clock.

#golang #go-recap #kubernetes

Oct 215 min read

Go 1.24 Recap: Faster Maps, Honest Benchmarks

Maps become Swiss Tables, b.Loop() fixes benchmarks, tools move into go.mod, and os.Root blocks path traversal. Go 1.24 in five minutes.

#golang #go-recap #performance

Oct 214 min read

Go 1.23 Recap: Iterators Arrive

You can range over functions now. Plus iterator helpers in slices and maps, the unique package, and timers that clean up after themselves.

#golang #go-recap #iterators

Oct 214 min read

Go 1.22 Recap: Loop Variables Fixed, Smarter Routing

The goroutine-in-a-loop bug is gone, net/http routes by method and wildcard, and math/rand gets a v2. Everything that matters in Go 1.22, in five minutes.

#golang #go-recap #backend

2024

Dec 228 min read

Go Basics: Getting Started with Golang

Learn the fundamentals of Go programming language - from installation to your first program. Perfect for beginners who want to understand Go's simplicity and power.

#golang #programming #backend #tutorial

Dec 2212 min read

Go Concurrency: Mastering Goroutines and Channels

Deep dive into Go's powerful concurrency model. Learn how to use goroutines and channels to build efficient, concurrent applications.

#golang #concurrency #goroutines #channels #advanced

Dec 2210 min read

Go Interfaces: The Power of Implicit Implementation

Master Go's interface system - from basic interfaces to advanced patterns like type assertions, empty interfaces, and interface composition.

#golang #interfaces #polymorphism #advanced #design-patterns

Dec 2215 min read

Go Performance Optimization: From Basics to Advanced

Learn how to optimize Go applications for maximum performance. Covering profiling, memory management, concurrency optimization, and advanced techniques.

#golang #performance #optimization #profiling #advanced

Jan 255 min read

Building a Simple Token with Rust: A Complete Guide

Learn how to create a basic cryptocurrency token using Rust and Solana. Step-by-step guide from setup to deployment with practical examples.

#rust #solana #blockchain #cryptocurrency #token #programming

Jan 155 min read

Web3 Basics: Getting Started with Decentralized Web

Learn the fundamentals of Web3, blockchain technology, and how to start building decentralized applications. A comprehensive guide for beginners.

#web3 #blockchain #ethereum #cryptocurrency #dapp

2021

Jul 196 min read

Back To Basic: Mental Model to Understand Flexbox

These are the mental models that I use to really understand flexbox, and I hope these can help you to understand too.

#css #flexbox

Mar 113 min read

Back to Basic: Should we use Rem, Em or Pixel?

Differences between rem, em, and px unit, and some use cases

#css

Jan 297 min read

Back to Basic: Flexbox or Grid?

My practice on how to choose between flexbox and grid.

#css #flexbox #grid

Writing

2026

Go 1.27 Recap: Generic Methods, JSON v2, and uuid

Go 1.26 Recap: Green Tea GC Is On

Go 1.25 Recap: Container-Aware by Default

Go 1.24 Recap: Faster Maps, Honest Benchmarks

Go 1.23 Recap: Iterators Arrive

Go 1.22 Recap: Loop Variables Fixed, Smarter Routing

2024

Go Basics: Getting Started with Golang

Go Concurrency: Mastering Goroutines and Channels

Go Interfaces: The Power of Implicit Implementation

Go Performance Optimization: From Basics to Advanced

Building a Simple Token with Rust: A Complete Guide

Web3 Basics: Getting Started with Decentralized Web

2021

Back To Basic: Mental Model to Understand Flexbox

Back to Basic: Should we use Rem, Em or Pixel?

Back to Basic: Flexbox or Grid?