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// engineering writing — 7 pieces

Writing

Jul 5, 2026

I Built trelix Because I Was Tired of Grepping My Way Through Codebases

How I built trelix — a zero-infra code intelligence engine that indexes any repo with Tree-sitter, runs 7-leg RRF retrieval, and answers questions about your codebase offline. From four hours of archaeology to a query that returns in 200ms.

pythonopen-sourceai
9 min
Jul 5, 2026

We Shipped Tombstone v1.0. Then We Found Nine Bugs That Would Have Paged Us at 2am.

What happened when we pressure-tested Tombstone v1.0 against production reality: a kill switch silently returning 400, approval endpoints wired to routes never registered, a scheduler that could double-fire. Nine bugs. Nine fixes. Here's the post-mortem.

devopsopen-sourcesystem-design
9 min
Jun 27, 2026inkforge

How I Built Tombstone: A Self-Hosted Feature Flag Intelligence Platform to Prevent the Next Knight Capital

A first-person engineering account of building Tombstone — an 8-service, self-hosted feature flag platform with tombstoned keys, causal incident correlation, and circuit-breaker auto-rollback — born from a 2am on-call incident and the realization that Jira plus Notion is not an audit trail.

feature-flagssystem-designopen-source
13 min
Jun 20, 2026inkforge

How I Built Inkforge: Designing an AI-Powered Article System with STORM Pipeline, BM25 RAG, and AWS Bedrock

A first-person engineering deep-dive into building Inkforge — an AI article generation system that combines the STORM research pipeline, BM25-based retrieval-augmented generation, and AWS Bedrock to produce structured, grounded long-form content at scale.

inkforgetypescriptai
14 min
Jun 20, 2026inkforge

Feature Flags at Scale: Designing a Distributed Control System for Production Behavior

At scale, feature flags stop being booleans and become a distributed control plane — here's the architecture, failure modes, and operational patterns that make them work at millions of evaluations per second.

feature-flagssystem-designdistributed-systems
13 min
Jun 19, 2026inkforge

How I Traced One Browser Request from Keystroke to Rendered Page

A packet-level walkthrough of what actually happens when you type www.google.com — DNS, TCP, TLS, HTTP, and rendering — with the latency costs and design trade-offs at each layer.

networkingdnstls
8 min
Jun 19, 2026inkforge

How DNS Actually Works: Resolution Hierarchy, Caching, and Production Failure Modes

A systems-level walkthrough of DNS resolution — from browser cache to authoritative nameserver — covering record types, anycast infrastructure, GeoDNS, and the operational edge cases that bite engineers in production.

dnsdistributed-systemsnetworking
14 min