From the Luminary engineering team
Release notes, architecture write-ups, and observations from operating Luminary at scale.
2026-03-18
Luminary 2.4: async context propagation for Bun and Deno
Bun 1.1 and Deno 2 both introduced native AsyncContext — we explain how Luminary uses it to propagate trace context without monkey-patching.
Read more →2026-02-04
How we reduced SDK cold-start overhead from 12ms to under 3ms
A detailed look at the lazy-init architecture change that cut cold-start cost by 75% across all supported runtimes.
Read more →2025-12-11
Why we chose W3C Trace Context over B3 as the default propagation format
B3 is everywhere. W3C Trace Context is the future. Here is the data that moved us.
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