Writing
Articles
Engineering notes on requirements, architecture, delivery, and personal projects.
Tasuki Keifu: A First Pass at Logs and Cache Signals
A deliberately small observability plan for request errors, script runs, and server-cache behavior.
A V1 Support-Payment Plan for a Japanese Audience
A constrained PayPal-first support flow with Japanese pages, ad attribution, and explicit payment limitations.
Tasuki Keifu: SEO and Traffic Measurement Plan, V2
Prioritizing search pages by data maturity: complete races, recurring schools, and well-supported athlete profiles.
Tasuki Keifu: Athlete Relationships V0.1 Technical Plan
A bounded implementation design for derived athlete relationships, PostgreSQL caching, precomputation, and lazy calculation.
Tasuki Keifu: Athlete Relationships V0.1 PRD
A bounded, explainable athlete relationship module based on direct competition, teammates, and repeated encounters.
Tasuki Keifu V0.2: Data Model and Feature Migration Plan
A staged model migration from athlete-only profiles toward people, roles, and team-level ekiden results, with page and backfill rules.
Tasuki Keifu: Data Model and Entity Map
An English data dictionary for the athlete, organization, race, result, provenance, audit, import, and derived-relation models.
Tasuki Keifu: Initial SEO and Analytics Plan
The original athlete-page-first search strategy and a focused set of traffic and behavior events.
Tasuki Keifu: Data Auditing and Source Strategy
A practical policy for athlete-record completeness, provenance, audit trails, source conflicts, and incremental data collection.
Tasuki Keifu V0.2 Product Requirements
A scoped plan for race pages, organization pages, and explainable relationships between athletes.