What is Threading in Nodejs

In Node.js, threading refers to the ability to execute multiple pieces of JavaScript code concurrently, rather than sequentially. By default, Node.js is single-threaded, meaning that it can only execute one piece of code at a time. This can be a limitation when it comes to certain types of workloads, such as CPU-intensive tasks that require a lot of computational power.

To address this issue, Node.js offers a few different options for threading. Here are some of the most common ways to add multi-threading to a Node.js application:

1. Child processes: Node.js allows you to create child processes using the child_process module. These child processes can be used to execute separate JavaScript files or to run system commands. This is a good option for tasks that are completely separate from the main process and don't need to communicate with it.

2. Worker threads: Node.js also provides a worker_threads module, which allows you to create multiple worker threads that can execute JavaScript code in parallel. This is a good option for tasks that need to share data with the main process, as the worker threads can communicate with the main thread using a shared memory space.

It's important to note that these options are not mutually exclusive, and you can use a combination of them to achieve the best performance for your application.

In conclusion, Node.js provides a few different options for adding threading to your application, depending on the type of workload you need to handle. Whether you choose to use child processes, worker threads, or async/await, adding threading can help you improve the performance of your Node.js application and handle more concurrent connections with high throughput.