When a Next.js app talks to a separate backend, you can route calls through Server Actions or hit the API directly from the client. Here's how to decide which fits your project.
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JavaScript runs on one thread but still handles clicks, network calls, and timers without freezing. Here's how the event loop, macrotasks, and microtasks make that possible.
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What happens inside the browser when you resize a window? A look at the four-step process that turns a CSS media query into a layout change.
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What actually happens when React sees a useEffect call. A look at the Fiber architecture, the render and commit phases, and why effects run when they do.
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How React tracks state under the hood, from Fiber nodes and update queues to Object.is comparisons and automatic batching.
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