Getting Started with Node So, in this section, you learned that:
– Node is a runtime environment for executing JS code. – Essentially, Node is a C++ program that embeds Chromes v8 engine, the fastest
JS engine in the world.
– We use Node to build fast and scalable networking applications. Its a perfect choice for building RESTful services.
– Node applications are single-threaded. That means a single thread is used to serve all clients.
– Node applications are asynchronous or non-blocking by default. That means when the application involves I/O operations (eg accessing the file system or the
network), the thread doesnt wait (or block) for the result of the operation. It is
released to serve other clients.
– This architecture makes Node ideal for building I/O-intensive applications. – You should avoid using Node for CPU-intensive applications, such as a video
encoding service. Because while executing these operations, other clients have
to wait for the single thread to finish its job and be ready to serve them.
– In Node, we dont have browser environment objects such as window or the document object. Instead, we have other objects that are not available in
browsers, such as objects for working with the file system, network, operating
system, etc. ?
