Node.js is a JavaScript runtime environment that is built on Chrome's V8 JavaScript engine. It is open-source and server-side. It is free and is based on the concept of asynchronous programming. Node.js is free from deadlocks and no function in Node.js directly performs any I/O operatio...
Meanwhile, the event-loop which has only one job to do is to check whether the stack is empty or executing any other block of code. The moment the event loop finds the stack empty it moves the very first item queued in the callback queue to the stack and the process keeps repeating. ...
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Support for MongoDB Server 3.6 is deprecated and will be removed in a future driver release. The driver natively supports explicit resource management for cursors and theMongoClient,ClientSession, andChangeStreamobjects. When using a compatible Node.js version, you can implement explicit resource mana...
In the other cases, we’ll have errors.A general rule of thumb is to always define functions, variables, objects and classes before using them, to avoid surprises.Suppose we have a function:function bark() { alert('wof!') }Due to hoisting, we can technically invoke bark() before it ...
After Node.js is installed on a computer, the file can be run using a simple command: node server_tst.js. The JavaScript code instructs Node to carry out two basic operations: Display a message in a browser on the local machine when connecting to http://localhost:2000. The message reads...
In our restaurant example, the consumer is the kitchen service that accepts requests from the queue, prepares the order, and sends it to the table. While the kitchen prepares food, waiters continue to take orders from other guests. Each point has its own obligations, doesn’t wait for the ...
in an event loop. Given it’s a queue, the order of how the code gets executed is determined by the order in which they appear in the event loop. An example of an event would be when a Javascript promise is resolved. In this post we will look at what the event loop is and how ...
EventHandler: Is event always in the same thread? And what about thread safety? Events within BackgroundWorker.DoWork() - Calls are illegal examples using C# with Ta Lib or others Examples, or guiidance on sending a docx file to a thermal receipt printer? Excel com exception, registry key...
The event loop tracks blocking requests and places them in the queue once the blocking task is processed. This is how it maintains its non-blocking nature. Since Node.js uses fewer threads, it utilizes fewer resources/memory, resulting in faster task execution. So for our purposes, this singl...