Writing

Long-form notes on Go, infrastructure and the CNCF projects I work in, with the real code and the tradeoffs. Sometimes a career lesson too.

~/Writing

All tech golang infra opensource ideology security observability prometheus web3

2026

  1. How Prometheus Finds Matching Series in Milliseconds

    2026-06-09 · 11 min

    How Prometheus finds the series matching your query in milliseconds: inverted indexes, posting lists, Seek-based set intersection, and why negative matchers and regex are the expensive part.

    techprometheus

  2. The Right Tool in the Wrong Runtime: Querying Cloud Cost Data with DuckDB

    2026-02-24 · 8 min

    Building a cloud cost-reporting pipeline over Oracle CUR data: from a managed warehouse, to DuckDB in a serverless function that hit a ~200MB memory wall, to a long-lived VM query service. A lesson about separating the tool from where you run it.

    infratech

2025

  1. I Built a File System Where Nobody Can Lie to You

    2025-10-02 · 13 min

    Building a content-addressed file system on libp2p where every blob is verified by its own hash, so a peer can never lie about what it sent.

    techgolangweb3

  2. Sister CVEs: Predicting the Vulnerabilities You Haven't Found Yet

    2025-06-24 · 8 min

    A scanner tells you which CVEs you have. We built a service that predicts the ones you probably also have but haven't found: ExploitDB co-occurrence mapping, Gemini for analysis, shipped as a Kubernetes microservice.

    securitytech

  3. How I Stopped Fake Emails From Wrecking My Signup Flow

    2025-05-14 · 12 min

    A tiny Go package that blocks disposable and fake signups with four cheap checks cheapest-first, an auto-syncing blocklist, and the honest false-positive traps nobody warns you about.

    techgolang

2024

  1. Beginner's Guide to Programming

    2024-09-26 · 3 min

    A roadmap for first-year students: pick one language, practice by building, choose a domain, learn from free resources and from people who have done it.

    tech

  2. How to Contribute to Open Source

    2024-09-19 · 2 min

    Eight steps to a first open source contribution: pick an organization, use the project, read CONTRIBUTING.md, set it up locally and land a first PR.

    tech

  3. A Load Balancer Is 200 Lines of Go, and Five Bugs You Won't See Coming

    2024-07-16 · 13 min

    Building a round-robin HTTP load balancer in ~200 lines of Go, and the five quiet bugs (one of which go vet screams about) that reveal what real load balancing actually is.

    techgolang

2023

  1. I Wrote a Container Runtime From Scratch to Find Out What a Container Even Is

    2023-12-05 · 11 min

    Writing a tiny rootless container runtime in Go to see what a container really is: namespaces, pivot_root, and why Docker needs the reexec trick.

    techgolang

  2. Rebuilding a Site 11 Million People Read, With Antora and Gatsby

    2023-08-18 · 5 min

    Rebuilding the tooling behind jenkins.io, read by 11M+ people, on Antora and Gatsby during GSoC, without breaking a single URL.

    techopensource