Optimized abs() for int64 in Go
Branch-free absolute value in Go assembly, and whether the compiler was already doing it better.
I'm Ryan Armstrong. I build and scale storage infrastructure — currently Tech Lead for the offline data plane behind Google's Blobstore, responsible for the durability and byte efficiency of hundreds of exabytes of data. Previously Canva, Meta and Dropbox.
Inline vs. discrete rules for AWS Security Groups in Terraform
A small design decision in Terraform with outsized operational consequences.
Postmortem: a socket leak in the AWS SDK for Node.js
A CDN 504 traced through nginx and Node.js to a socket leak in a pinned AWS SDK release, and the lessons on timeouts, health checks and dependencies.
Downloading large files in Go
The design story behind grab, and what makes a download resumable, observable and correct.
Writing a Zabbix module with cgo
C and Go interop, and the sharp edges between them.