Writing
Latest from the journal
- apple-silicondtracemacos
Reading Apple Silicon's performance counters without root
There is no eBPF for macOS and DTrace requires root. This paper documents what remains: sample, xctrace, the undocumented kpep event catalogue, and a method for identifying the unnamed counter slots that xctrace exports.
- analyticsdata-engineeringdata-quality
Data Quality Is Not About Pristine Data. It Is About Being Fit for Use.
A practical framework for measuring data quality, understanding its costs, and focusing on what actually matters for the people who use the data.
- bundrizzlenodejs
Postgres connection options you might not know
A grab bag of Postgres connection/session defaults (and one Linux I/O gotcha) that make your app safer, more predictable, and easier to debug.
Work
Selected projects
01
pdfarena
In-browser benchmark that races four PDF engines on a document you supply: pdfboss, hayro, pdf.js and PDFium, each in its own web worker. The stopwatch wraps only the render call, and the full sweep runs one engine at a time so they cannot fight over cores. Nothing is uploaded.
RustWebAssemblyWeb WorkersNuxtVue02
Kubernetes The Hard Way, visualized
One-page visual map of the Kubernetes The Hard Way course: all 13 labs, the four-machine topology, every certificate, port and component. A cluster diagram assembles as you scroll; three toggle views show who holds which certificate, who talks to whom on which port, and which lab builds each part.
KubernetesPKISVGVanilla JSCaddy03
Enterprise RAG Platform
Unified Confluence, SharePoint and other sources into a single retrieval layer. Migration was done via Strangler Fig patter under an integration test harness. Shipped Python and TypeScript SDKs to accompany the platform.
QdrantPostgresRustGoPython04
Routing Engine
Redesigned core routing logic with async architecture, handling 400 req/s.
WebhooksGoLambdaS3SQS05
Magenta Smart Speaker
Core Architect for the ecosystem, serving hundreds of thousands of customers.
IoTVoice AIPythonCC++06
memories
Git-powered, file-based memory store with semantic search. Branching, history, diffing, and commit semantics with optional vector search via local embeddings.
GoGitSemantic SearchEmbeddingsCLI
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