Articles
In-depth articles on AI, web development, cloud native, and indie hacking.
AI requests naturally carry high-dimensional information such as model, tenant, prompt version, and toolchain. This article covers metric label layering, cardinality budgeting, OpenTelemetry attribute trimming, Prometheus acceptance criteria, and over-limit rollback.
The hard part of Function Calling is not getting the model to return a function name, but handling wrong tool selection, argument drift, duplicate execution, timeouts, and partial success. This article presents a complete design for tool contracts, executors, idempotency, retries, and confirmation mechanisms.
Gateway retries, streaming segments, and vendor callbacks create duplicate or late usage. This article designs immutable usage events, unique dedup keys, conflict isolation, billing-period watermarks, and three-way reconciliation.
SSH is more than remote login. Its tunneling and port forwarding provide a developer's Swiss Army knife for reaching private services, creating secure proxies, and traversing bastion hosts. This article covers local, remote, and dynamic forwarding, ProxyJump, SSH key management, and ssh_config.
Mock tests all green, the real API may still have changed enums, defaults, or error semantics. This article brings specs, producer implementations, and test doubles into one versioned manifest, using bidirectional consistency and counterexamples to block "self-consistent but wrong" frontend tests.
The terminal is a developer's home turf, and a well-configured toolchain can double your efficiency. This article explains a modern setup: Zsh + Oh My Zsh/Starship for prompts, Tmux for sessions, panes, and persistence, fzf for fuzzy finding, and modern replacements such as eza, bat, ripgrep, and zoxide.
A codemod can rewrite thousands of call sites at once, and just as reliably replicate the same bug. This article builds an executable invariant gate from node selection, semantic preservation, idempotency, format boundaries, and diff budgets.
Hooks are easy to use, but details around useRef, useMemo, and dependency arrays trap many developers. This article explains the Hooks mental model of closures and dependencies, common pitfalls such as stale closures and infinite loops, custom Hook extraction principles, and why useEffect is not a lifecycle method.
A page restored via the back button is not a normal reload; the JS heap and stale state can come back as-is. This article uses a pagehide/pageshow contract, resume generations, and a server operation receipt to prevent duplicate submissions and the continued use of stale permissions.
Async/await is only the beginning. Advanced features such as for await...of, AsyncIterator, and generators handle streaming data elegantly. This article covers Promise combinators, async iterators, generators, AbortController cancellation, and concurrency control with p-limit, making JS/TS async code elegant and controllable.
`navigator.storage.estimate` is only an approximation, and `persist` returning `true` does not mean user data will never disappear. This article establishes an origin-level budget, eviction detection, and a tiered recovery contract for Cache Storage, IndexedDB, and OPFS.
Do not want to deploy Elasticsearch? PostgreSQL's built-in full-text search is enough at small and medium scale. This guide covers tsvector and tsquery, tokenization and dictionaries, GIN indexing, ts_rank ranking, Chinese tokenization with zhparser or pg_jieba, and hybrid vector search.