P.01Interaction to Next Paint replaced First Input Delay in 2024, and most sites still haven't caught up. Here's why INP is harder and how to actually fix it.
P.02LiteLLM and OpenRouter add failover, cost caps, and model fallback to your LLM calls. Here is how each works and when a routing layer is worth building.
P.03Neon separates storage from compute so Postgres can branch like git. Here's how the branching model works and when it's worth migrating for.
P.04Client state is easy. Server state, which lives on a backend and changes on its own, is where React apps make a mess. TanStack Query handles it cleanly.
P.05Position one element relative to another in pure CSS. No Popper.js, no positioning logic, no recalculation on scroll. How anchor positioning works.
P.06gRPC has been available for years but many teams default to REST without thinking through the tradeoffs. Here's how gRPC works, where it fits, and where it doesn't.
P.07k6 is a load testing tool with JavaScript scripting and CI integration. Writing meaningful tests, reading the results, and catching regressions early.
P.08Python 3.13's experimental mode removes the Global Interpreter Lock. What the GIL actually does, what free-threaded Python changes, and what it doesn't fix.
P.09Tauri 2.0 added iOS and Android while keeping tiny binaries, a Rust backend, and the OS webview instead of a bundled Chromium. How it works, and when.
P.10CodeRabbit and GitHub Copilot code review changed the first pass. Here's what these tools actually catch, where they fail, and a workflow that combines both effectively.
P.11Connection exhaustion is a common production failure at scale. Here's how pooling actually works, which tool fits which setup, and the config decisions that matter.
P.12Add similarity search to your existing Postgres database using pgvector. Real setup, indexing strategies, and when you actually need a dedicated vector database.