Overall, Node.Js significantly improves web server performance by boosting the speed and continuing the next request. But for all that to happen, developers need to implement its advantages for best results properly. There are some things you should know about Node.Js and understand it’s pitfalls first.
That’s why in this article, we’ve listed the most common mistakes that you should avoid to never go wrong with Node.Js development.
Invoking a Callback More Than Once
A common issue we previously referred to as the “callback hell” is calling a callback more than once. Developers often save a file and reload the Node.Js app to see if it crashes fast. It results in multiple callback executions, as they didn’t return after the first time.
Being careful means avoiding this mistake. For that reason, some developers have a habit of adding a return keyword before a callback invocation. In many functions, this has no significance, so it only makes it easier to avoid such issues.
Assuming Number To Be an Integer Datatype
The floating-point numbers can hold integer representations up to a specific value. Exceeding it would instantly mess things up. Dealing with large numbers rarely happens, as we mentioned. Still, if you want to, you can find integer libraries, which implement the essential math operations on large precision numbers.
Using Console For Debugging
There are some great libraries built, especially for debugging, so there’s no reason to use console.log for this task. Such packages provide convenient enough ways to disable or enable debug lines when you start the app. Using debug is simple and more efficient.
Blocking The Event Loop
Node.Js is single-threaded. Developers need to deal with this fact. It means that anything that blocks the event loop will block everything. Two parts of the applications cannot run parallel. Injecting any piece of code when Node.Js is fetching a doc from the database system is enough to block the event loop.
Developers must address each case individually and avoid CPU intensive tasks in general. A solution might be using an open-source module such as StrongOps to detect issues or delays in the loop.
Not Using Supervisor Programs
No matter where your Node.Js code is running, a supervisor program monitor that could orchestrate your application, is always beneficial to have. Often when developers design and implement modern apps, the code is set to fail fast. When an error occurs, it’s best if you don’t try to fix it. Instead, let the program crash and have your supervisor restart it. It happens in a matter of seconds.
Supervisor programs have multiple advantages. It not only restarts the program when it crashes but also does when files change. These are among the best Node.Js practices, which make the development process easier and faster.
Better Node.Js Development
The common mistakes we’ve listed above might have horrible consequences for your application. Although they are typical for Node.Js development, similar issues might be related to other programming languages too. Being aware of these mistakes, you may learn to avoid them during development. Otherwise, a good idea would be to hire Fireart Studio experts to assist with the development of high-quality software products.