How node.js is different from PHP and ASP ?
Node.js is different from PHP and ASP
A quick look at how request handling differs between Node.js (event-driven, non‑blocking) and traditional platforms like PHP/ASP (threaded, blocking).
How Node.js handles requests
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Node.js sends the request to the server.
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Picks new requests without waiting for the current one to finish (non‑blocking).
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When a request completes, data is returned to the client via callbacks/promises.
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Eliminates idle waiting; continues processing the next request immediately.
How PHP/ASP handle requests
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Sends a request to the server.
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Waits until the request is completed (blocking per request/thread).
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Returns data only after completion.
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Then sends the next request.
Key differences
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Concurrency model: Node.js is event‑loop based; PHP/ASP rely on threads/process per request.
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I/O strategy: Node.js non‑blocking I/O vs. typical blocking I/O stacks.
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Resource usage: Node.js reuses a single event loop; PHP/ASP generally allocate per request.
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Use cases: Node.js excels at real‑time, streaming, and chat; PHP/ASP suit request/response MVC apps.
Tip: In Node.js, prefer async/await with Promises to keep non‑blocking code readable and maintainable.