06 / ENGINEERING NOTES
Engineering Notes
Long-form notes on AI, engineering systems, and organizational evolution.
Building HHY Language: From Flow Philosophy to a C Runtime
A ground-up account of HHY Language v1.0: why flow is the central abstraction, how the lexer, parser, AST, checker, and runtime fit together, and what turns a language implementation into a dependable system.
Read articleFrom v1.7.0 to v1.7.1: Giving Every HHY Commit a Clear Boundary
From the optimizing compiler back to resource ownership, failure recovery and controlled concurrency: my engineering decisions in HHY v1.7.1, its measured baseline, and the path toward shared state, coroutines and distributed transactions.
Building HHY CMS: Turning Website Delivery into a Reusable Product
An engineering account of HHY CMS 0.1.2: HHY Web and MySQL, recoverable installation, draft and publication boundaries, theme separation, and the responsibility of building software for other people.
From v1.5 to v1.7: Building a Verifiable Optimization Pipeline for HHY
From database resource lifetimes to VM profiling, calls and unwinding, then HIR/MIR: the engineering behind HHY v1.5.0–v1.7.0, and why shipped optimizations remain opt-in.
HHY Database 1.0: Building Database Access for Long-Running Applications
What Go database/sql, Python DB-API, and PHP PDO teach me about HHY's database layer: connection ownership, bounded pools, transaction scopes, streaming, exact types, and uncertain commits.
From Scripts to a Resident Service: How I Built the HHY Web Runtime
A retrospective on the HHY v1.4.3 Web Runtime: from a repeatedly callable interpreter and HTTP request parsing to GET/POST, streaming backpressure, multiple workers, and the performance boundaries behind one million requests.
From AST to Bytecode: Making HHY's Default Engine 2.7× Faster
How I built HHY v1.3.10's Bytecode VM—from the AST semantic baseline, Compiler, and Verifier to Stream Kernels, profiling, cache governance, and a six-runtime performance comparison.
Building a Multi-API Data Collector: Three Sources, One Incremental Table
How I used HHY to collect OpenAlex, Crossref, and GitHub pages concurrently, normalize semantics, isolate failures, and incrementally merge CSV.
Building Asset Governance: Audit Before Effects
How I used HHY to detect risky assets, emit a reviewable action plan, and apply allow-listed remediation through runtime-native dry-run semantics.
Building DataFlow ETL: CSV, JSON, and HTTP in One HHY Flow
How I built a complete HHY pipeline for CSV and JSON ingestion, concurrent profile enrichment, grouped reporting, and atomic dual output.