Performance Tuning and Benchmarking

2024-11-02 Go Books Jakub Jarosz

Have you ever wondered how to determine if your Go code is performing at its best?

Benchmarks help you spot slow code and fix it. They also help you choose the best data structures and algorithms. By the end of this book, you will know how to write benchmarks that guide your engineering decisions.

Simple Trick To Speed Up Your Go Tests

2025-05-05 Go

We focus on fundamental parts of the cmp package: checking equality and calculating diffs. With a small change, you increase test efficiency more than 7x. Yes, over 700% faster. Why work harder, not smarter? Continue reading

Go Testing: How to Communicate Clearly

2025-04-30 Go

In Go, we build packages - fundamental Lego-like blocks that we assemble in modules and use to build applications. That’s why it’s crucial we start designing packages by modelling their public APIs. Let’s roll up our sleeves, sharpen the scalpel and start the second code surgery. This time, we focus on tests. Continue reading

Don't Overload Your Brain: Write Simple Go

2025-04-08 Go

This week we do small refactoring to illustrate how we can improve code readability and reduce cognitive load. Continue reading

Benchmarking: What You Can't Miss in Go 1.24

2025-03-11 Go

For us Go developers, writing less code means fewer opportunities to make mistakes. But how about achieving more by doing less? That sounds appealing. Isn’t it? And how about spending less time writing code to force the compiler not to optimise the benchmarking functions?

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