React Fragment Refs in 19.3: How FragmentInstance Works
22
Oct
React 19.3 Fragment refs give you a FragmentInstance for events, focus, observers and scrolling across a Fragment’s DOM children, with no wrapper div.
LangChain MCPAdapter Postmortem
16
Oct
LangChain 1.4 moves MCP into langchain.mcp. We trace MCPAdapter’s real source, the interrupt-driven elicitation loop, and how tool errors reach the model.
React 19.3 browser() API: How Browser-Only Rendering Works Under the Hood
15
Oct
Learn how React 19.3 browser() handles browser-only React components during SSR using use(), Suspense, hydration and intentional server bailouts.
Next.js 16.3 Instant Navigations: How Partial Prefetching Works
14
Oct
Learn how Next.js 16.3 Instant Navigations use Partial Prefetching, App Shells, Suspense, use cache, and Playwright tests to make App Router navigation instant.
How to Monitor Laravel, Django, Rails, NestJS and Next.js Applications in Production
13
Oct
Learn how to monitor Laravel, Django, Rails, NestJS and Next.js applications, including requests, queues, tasks, databases, APIs, errors and business metrics.
LLMs Don’t Read Words. Here’s What They Actually See
08
Oct
Tokens are the units an LLM reads and bills by. How tokenization works, how it fills the context window, and what drives token costs up.
AI Sales Agent vs Human SDR: Cost, Call Volume and When to Switch (2026)
08
Oct
An AI sales agent makes 400-600 calls a day for $3,000-$5,000 a month. How it compares to a human SDR on cost, meetings and payback.