The third path: why YAML catalogues rot and runtime tracing misses the point.
Two well-trodden roads. Both fail at scale, for opposite reasons. The way out isn't picking one — it's noticing the architecture is already in your code.
// FIELD NOTES FROM THE INDEXER
Notes from the indexer.
Engineering deep-dives, architecture thinking, and the occasional changelog. Written by the team building ArchMellon.
Recent posts
View archive →Why we ripped out our recursive AST walker (twice).
Stack overflows in production are humbling. Here's the iterative tree-sitter walker we landed on, what we got wrong, and why the fix was less code, not more.
1.7.0 — Rust support, faster blast-radius queries, and per-org isolation.
Rust joins Go, Python, TypeScript, and JavaScript as a first-class language. SurrealDB pool refactor lands. Plus 23 plugin SDK fixes.
Architecture is a stream, not a snapshot.
Why we re-index on every commit instead of every quarter, and what that changes about how teams reason about ownership, drift, and decay.
Writing your first WASM detector plugin in 200 lines of Rust.
A walk-through: from `cargo new` to a signed plugin running against your repos. Includes the trickiest bits — extism host functions, AST cursor management, and emitting confidence-scored edges.
Blast radius, calculated: how we model change impact across services.
The graph traversal that powers our impact analysis, why we cap it at depth-3 by default, and what we learned from teams who needed depth-7.