P.01Drizzle is the TypeScript-first alternative to Prisma: schema in TS, migrations in SQL, no query engine binary. How it works, and when to pick it.
P.02LLM observability means tracking traces, token costs, latency, and output quality to debug production failures instead of guessing. Covers Langfuse and Helicone.
P.03Polars beats pandas on speed through Arrow memory, multi-threading, and lazy evaluation by default. Here's when the switch is worth it and how to migrate.
P.04Tailwind v4 moves configuration from JavaScript to CSS, drops the content array, and ships a faster engine. What the breaking changes mean for a real migration.
P.05Vitest runs faster than Jest, handles ESM and TypeScript natively, and shares Jest's API. The case for switching in a Vite project, and how to do it.
P.06Biome is a Rust-based toolchain that replaces ESLint and Prettier with one fast binary for linting, formatting, and imports. Here is what migrating looks like.
P.07OpenAPI-first API development means writing the spec before code, then generating server types, request validation, and client SDKs from it.
P.08Not every real-time feature needs WebSockets. Server-Sent Events handle most push scenarios with far less complexity. How to choose, with working code.
P.09Background jobs that crash mid-run lose their state. Temporal makes workflows durable state machines that survive restarts and deploys. In TS and Python.
P.10Every public API needs rate limiting, but the algorithm you choose shapes the user experience and the failure modes. Here's how each approach works and when to use it.
P.11Passkeys are mainstream now, with native support from Apple, Google, and Microsoft. Here's what WebAuthn looks like in real code, and when to use it.
P.12Playwright E2E tests break because of fragile selectors, shared test state, or overly broad scope, not the tool itself. Fix those and tests survive UI changes.