good-fishing-day: A Fishing Weather Dashboard

good-fishing-day is a small personal dashboard that combines tide and weather data to estimate whether a day is worth fishing.

June 5, 2026 · 2 min · 304 words · Jack Yu

map-ask: Natural-Language Geospatial Search

map-ask explores how plain-language map questions can become structured geospatial actions using open data sources.

June 4, 2026 · 2 min · 302 words · Jack Yu

AeroPlay: A Flight-Mode Game Hub

AeroPlay is a mobile-first offline game hub designed to work in airplane mode with local assets and saved progress.

June 3, 2026 · 2 min · 304 words · Jack Yu

Bedrock Lab: A Behavior Pack as a Small Rules Sandbox

Bedrock Lab is a small Minecraft Bedrock behavior pack for testing gameplay rule changes without experimental toggles.

June 2, 2026 · 2 min · 304 words · Jack Yu

tegdb-server: Putting a PostgreSQL-Compatible Protocol in Front of TegDB

tegdb-server explores how a small embedded database can be exposed through a PostgreSQL-compatible server surface.

June 1, 2026 · 2 min · 327 words · Jack Yu

cta-guard: Risk Controls Before Trading Logic

cta-guard is a private trading-system project where the most publishable lesson is risk control, not strategy details.

May 31, 2026 · 2 min · 326 words · Jack Yu

scale-kv: A Storage Experiment About Complexity

scale-kv is a Rust storage experiment that explores transactional KV, page structures, quorum behavior, and distributed-system complexity.

May 30, 2026 · 2 min · 337 words · Jack Yu

QuackLake: A DuckDB-WASM Analytics Prototype

QuackLake explores a WASM-first analytics shape with DuckDB-WASM, object storage, a range gateway, and a small control plane.

May 29, 2026 · 2 min · 302 words · Jack Yu

ob-skills: Packaging OceanBase Knowledge as Agent Skills

ob-skills is a small collection of OceanBase-focused agent skills for architecture guidance, DDL review, and validation.

May 28, 2026 · 2 min · 354 words · Jack Yu

TegDB: Notes from Building a Small Embedded Database

TegDB is a small embedded database experiment focused on simplicity, reliability, WAL recovery, and a SQL-like interface.

May 27, 2026 · 2 min · 323 words · Jack Yu