ezstack.dev

Zeke's Ramblings

zeke@ezstack.dev> cat posts.md█

A/B Tests in Microseconds

•7 min read
Moving A/B experiment evaluation in PayPal checkout into an in-memory cache, cutting TTFB by 141ms, LCP by 184ms, and calls to the experimentation platform by 93%.
> cat~/posts/a-b-in-microseconds.md

Self-hosted CI in Seconds

•14 min read
Self-hosted runners, shared caches, mise task caching, and warm VM pools. Taking ZRS PR CI from 8+ minutes to under a minute while adding full e2e testing.
> cat~/posts/ci-in-seconds.md

Intro to learning Rust for JavaScript engineers

•5 min read
Documenting my journey from JavaScript to Rust.
> cat~/posts/rust-for-js-engineers-intro.md

Interviewing 100 Engineers

•6 min read
Lessons I learned from interviewing over 100 engineers during my career.
> cat~/posts/interviewing-100-engineers.md

Stop Sharing Ugly Links

•4 min read
How to control link previews with Open Graph and how I set up Open Graph for my Astro blog.
> cat~/posts/stop-sharing-ugly-links.md

From 33ms to 1ms

•8 min read
Rewriting a core service communication module at PayPal, leveraging Undici to reduce connection latency by 97% in checkout.
> cat~/posts/33ms-to-1ms.md