Why node js is fast

When function was compiled and code is running, V8 starts the profiler thread to see, which functions are hot and which are not, also collecting the type feedback, so V8 can record the type information flowing through it.

It comprises two components: Hydrogen and Lithium. The LIR is similar to machine code, but still platform-independent. Only then this optimized code replace the old un-optimized code and continue executing your code much faster. September 5, 7 minute read. The community of VSCode is enormous, and it has created a lot of extensions.

Some of these extensions are really increasing productivity when working with Ty September 1, 5 minute read. Everyone argues if having such file July 21, 6 minute read. ESLint is a great tool and has a decent infrastructure for developing your own rules and plugins. July 19, 7 minute read. TypeScript is flexible enough to allow skipping compiler errors. You even can write JavaScript and still compile the code with no errors. But, what if develo Why Node. It can be anything ranging from calculating Fibonacci sequence to querying database.

It means when you are processing a request, writing to the database, for instance, it blocks any other operations, so you will have to wait for it to finish, before you can do anything else. Each request to web-service creates a separate PHP interpreter process that is running your code.

Thousands of connections means thousands of running processes that take your RAM. You can see how your used memory is growing up with your active connections. This means you can read files, send emails, query the database, etc. The survey shows that Node.

It is single-threaded, non-blocking, and asynchronous. Therefore it can process multiple tasks concurrently in one thread, instead of queueing them. V8 is the fastest JavaScript engine. Google develops Node. The technology enables the app to handle much more requests at the same time than other another solution. The most successful companies from different industries have built their solutions with Node.

As a result, the number of servers they needed to handle the traffic dropped from 30 to 3. This resulted in the pages being served ms faster — something users will surely notice. With over 7 million Node. Many are learning Node. Choosing a backend technology for your web application is tough. If you want to focus on performance, there are lots of arguments for Node. Regardless of the many benefits just listed , I find two main reasons for choosing Node.

You want your backend framework or environment to last as long as possible and to be supported and expanded forever. The trend for Node. This means that you can read files, send emails, query a database, and do other things all at the same time. On the contrary, there is only one NodeJS process constantly running and waiting for connections.

V8 is a JavaScript virtual machine written by Google for the Chrome browser. From the very beginning, V8 was created to make JavaScript fast, at least — to provide more speed than competing engines.

For a dynamic language without strict typing, achieving high performance is not an easy task. V8 and other engines are evolving to better meet this challenge. When the virtual machine gets the source code, it can compile it directly at runtime. This means that operations that are called frequently can be compiled into machine code which will greatly improve execution speed.

An event loop is a construct that is responsible for handling events in some programs.