The node operates as a single thread, and all events that occur during program execution (for example, a web application) are queued in the order in which they are found, and most importantly, asynchronously. This means that none of the processed events will block the execution of the rest. The event loop is only responsible for receiving the event, executing it, and returning the result to the running thread node.
Many experts talk about Future of Node.js as an effective website development tool. Already, many large sites are developed with Node.js all over the world. And judging by the pace of development, the platform has real chances to compete with the giants that have been on the market for a long time.
The most common pattern for Nodejs development is the so-called SPA, or Single Page Application. SPA is nothing more than an application that runs entirely in a single browser window, in which the page does not reload after each request, as it does in the traditional request-response model. Communication occurs asynchronously and data is transferred between:
1. client (browser) and server (Node.js) via REST calls (REST Representative State Transfer),
The sheer number of libraries, plugins and APIs available gives you a lot of wiggle room when building apps that are compatible with most mobile devices. For this reason, application development and device programming from the Internet of Things (IoT) segment can be easily done using JS.
Good to know
JS is also used in writing artificial intelligence and machine learning algorithms.
Does Node pose a threat to the safe functioning of the application?
Sometimes a node is seen as a threat in and of itself. The main reason may be lack of standard error handling due to the design of the platform. This could result in a server shutdown due to an error causing the application to crash.
In addition to common web application security issues such as XSS and CSRF attacks, inadequate security configurations, incorrect redirects and migrations, the most common Node.js threats include technology-specific issues such as NPM phishing (malicious modules with similar names) or DoS with regular expressions.
While Node itself poses no threat to online security, the use of components provided by third parties may pose a risk of malicious code entering our application. Software from sources other than trusted developers can be helpful, but there are often additional risks associated with using it. Configuring, installing and using components from external vendors requires additional work, especially with regard to the security of web applications.