I’m Jack, a TiDB maintainer and distributed systems engineer. I write about transaction correctness, storage, agent runtimes, and AI infrastructure.
Selected paths: Distributed systems · Agent systems · Inference systems
Featured: Reading TiDB source code · Designing agentd · OceanBase internals
Pith now powers Portsmith Go, the migration tool used to update Pith from upstream Pi. Two accepted increments show how source ownership, frozen tests, and recovery turn a first port into a maintenance workflow.
A field report on using Pi and DeepSeek to migrate selected Pi components to Go: 26 accepted steps, three module commits, and the evidence behind the result.
How I connect a GMK home server and a small Lightsail instance to run personal agents, local inference, messaging, and a shared virtual world—with private networking, external monitoring, and tested recovery.
Why agentd treats turns, scoped execution, atomic finalization, and delivery as runtime contracts rather than transport details.
mood-midi-mlx is a first-pass Apple MLX project for mood-conditioned symbolic MIDI generation.
driftloop is a pure-frontend generative music app that composes and synthesizes continuous multi-instrument background music in the browser.
Nightfall is a web-based AI Werewolf platform where the browser is the referee and agentd supplies the AI seats.
Canopy is a local MCP server for Singapore cycling and walking routes, using GraphHopper with a PCN-biased model and OneMap for geocoding.
good-fishing-day is a small personal dashboard that combines tide and weather data to estimate whether a day is worth fishing.
map-ask explores how plain-language map questions can become structured geospatial actions using open data sources.