The journey to faster JSON parsing

#​451 — March 10, 2023

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The Go Weekly Newsletter

Why Turborepo is Migrating From Go to Rust — Turborepo is a high performance JavaScript build system built upon Go but.. perhaps not for much longer. Why? It mostly seems subjective, but you might find their arguments interesting.

Vercel Engineering Team

Code Coverage for Go Integration Tests — While Go has had coverage support at the package test level for almost ten years, coverage for integration tests run outside of the go test mechanism has been non-existent. With Go 1.20, it’s possible to instrument a binary and generate coverage files for both the module code and dependent packages.

Than Macintosh

Go! Experts at Your Service — Do you need help filling skill gaps, speeding up development & creating high performing software with Go, Docker, K8s, Terraform and Rust? We’ll help you maximize your architecture, structure, tech-debt and human capital.

Ardan Labs Consulting sponsor

A Journey to High-Perf JSON Parsing in Go — A distributed SQL database needs to maximize data parsing, so CockroachDB’s (very successful) story about doing so is worth the read. The answer came from a somewhat unexpected place and benefits anyone looking to speed up JSON parsing.

Yevgeniy Miretskiy (CockroachDB)

Getting Started with Multi-Module Workspaces — Potentially overlooked in Go 1.18 because they weren’t generics, workspaces let you tell the Go command you’re writing code in multiple modules at the same time and easily build and run code in those modules.

Official Go Docs

IN BRIEF:

• ⭐️ InfoWorld's Paul Krill reports that Go has rejoined the top 10 most popular programming languages in the latest TIOBE index ranking (for what it's worth).

• Go 1.20.2 and 1.19.7 have been released with a crypto/elliptic security fix.

• If you want to speak at this year's GopherCon UK, you'll want to submit your proposal quickly as it closes on Friday evening.

• The Go team meets regularly to discuss developments in the Go compiler, etc, and here are some of the recent meeting notes if you're interested in such details.

• After all the discussion about telemetry in Go, Russ Cox has now filed the proposal for adding the opt-in telemetry feature.

Things to Consider When Going with sqlc — sqlc (the SQL to type-safe code generator) is a handy time and boilerplate saver, but isn’t a one-size-fits-all solution.

Preslav Rachev

Terraforming Kubernetes (Free Course) — Lead by Udemy instructor, Justin Mitchel, this course shows you how to spin up a K8s cluster using Terraform.

Akamai Connected Cloud sponsor

errors.Join Loves defer? — In Go 1.20, you can join errors so that original errors aren’t overridden. William looks at how nicely this meshes with the use case of handling close errors in a defer.

William Wennerström

How Not to Use context.WithValue
Vishnu Bharathi

Higher-Order Functions in Go
Eli Bendersky

🛠 Code & Tools

ngrok-go: Ingress to Your Go Apps as a net.Listener — ngrok is a long standing tool (and, increasingly, commercial service) for opening up a locally hosted service to the public Internet and now there’s an idiomatically Go way to embed ngrok-style ingress into apps.

Alan Shreve (ngrok)

Valgo: An Expressive Validator Library — Type-safe and extensible validator library that supports localization and is built upon generics. “Valgo differs from other validation libraries in that the rules are written in functions and not in struct tags. This allows greater flexibility and freedom when it comes to where and how data is validated.”

Cohesive Stack

Don’t Let Your Issue Tracker Be a Four-Letter Word. Use Shortcut

Shortcut (formerly Clubhouse.io) sponsor

Gool: A Generic Goroutine Pool — If you’re familiar with Python’s ThreadPoolExecutor, you might like this as it provides sync and async versions of Submit and Map to run tasks.

Tommy Tian

go-ssaviz: SSA Visualization with Graphviz — You won’t need this unless you’re doing some really low level work, but this tool lets you see Go’s internal use of static single-assignment in your Go package of choice.

Shengyu Zhang

Convolutional Encoder and Viterbi Decoder for Go — If you need this, you’ll know. The author explains the error-correcting nature of such encoders and decoders in this comment.

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