![]() If yes, then pick up one Client Request from Event Queue.If no, then wait for incoming requests for indefinitely. Event Loop checks any Client Request is placed in Event Queue.It is main heart of Node.js Platform Processing Model. Why it got this name is that it uses indefinite loop to receive requests and process them. Node.js Web Server internally has a Component, known as Event Loop.Node.js Web Server receives those requests and places them into a Queue.Node.js Web Server internally maintains a Limited Thread pool to provide services to the Client Requests.Single Threaded Event Loop Model Processing Steps: Node.js Processing model mainly based on Javascript Event based model with Javascript callback mechanism. It follows Single Threaded with Event Loop Model. Node.js Platform does not follow Request/Response Multi-Threaded Stateless Model. continue working on the request ) by executing the callback as soon as it has time. When the IO operation is finished, that is another kind of event, and the server will process it ( i.e. The server then immediately starts to process another event ( maybe another request ). The server starts processing it and when there is a blocking IO operation, it does not wait until it completes and instead registers a callback function. Basically the server consists of one thread processing one event after another.Ī new request coming in is one kind of event. No Buffering – Node.js applications never buffer any data. There is an Active and vibrant community for the Node.js framework – The active community always keeps the framework updated with the latest trends in the web development. Hence, development in Node.js becomes easier for a developer who knows JavaScript. The majority of developers are already well-versed in JavaScript. Node.js library uses JavaScript – This is another important aspect of Node.js from the developer's point of view. Traditional servers create limited threads to handle requests while Node.js creates a single thread that provides service to much larger numbers of such requests. ![]() However, this does not block other operations. The response from these events may or may not reach the server immediately. Single Threaded but Highly Scalable – Node.js uses a single thread model for event looping. Node has a wrapper over the JavaScript engine which makes the runtime engine much faster and hence processing of requests within Node.js also become faster. Thus it will not wait for the response from the previous requests.įast in Code execution – Node.js uses the V8 JavaScript Runtime engine, the one which is used by Google Chrome. This feature means that if a Node receives a request for some Input/Output operation, it will execute that operation in the background and continue with the processing of other requests. What are the key features of Node.js?Īsynchronous and Event driven – All APIs of Node.js are asynchronous. ![]()
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