Over the past few years, NodeJs has grown to become one of the most widely used systems. Getting started with those NodeJs projects is certainly simple.
Its widespread use can be ascribed to the quick and effective development environment it offers. Furthermore, JavaScript and Node.js have emerged as the best choice for connecting all of these services together as the majority of the internet is now evolving into user interfaces (UI) and a platform of services.
It's no fate that businesses may now combine a variety of services in the same UI because Node.js was created particularly for integrations. Without having to create numerous platforms, it has also made integrating legacy systems extremely cost-effective.
You can be sure that you will use it frequently for many years to come because some developers consider it to be the best solution to almost any problem. However, despite its long history, it is still a relatively new technology. In the upcoming months, you can anticipate a lot of changes that will enhance Node.js as the technology continues to mature.
Best Practices for NodeJs Developer
Let us have a look at a few effective ways a developer can use to develop with Nodejs.
Use Async/await or Promises
Concurrency primitives are Promises or Async/await Promises. It now plays a significant role in the majority of current programming languages.
Organize Code
Divide your code into manageable chunks and then reduce those chunks even further. You can avoid complications by making modularized code easier to understand and reason with for you and other developers by following this method. When you write code, you might think you know how it works, but when you come back to it in a few months, it could be a problem. Therefore, you really shouldn't expect your coworkers to immediately comprehend it if you can't understand it yourself.
Standards of JavaScript Coding
Setting a company standard and adhering to it is a good idea because a nightmare can result from not having a set developing style. When code is written in a consistent style, it is much simpler to comprehend. The time spent deciding whether to write with tabs or spaces is then reduced.
Because there are no decisions to make and you won't have to manage the .jshintrc or .jscsrc files (company standards can be configured in these files to automatically check the styles and alert developers), incorporating JavaScript Standard Style is a great option.
To maintain code readability throughout the project chain, select an existing set of guidelines for Nodejs programming and adhere to them. In most cases, the developers' choice of style is personal to them. As a result, to get a better idea, you should look at the style guides that your rivals use.
Use Synchronous & Asynchronous Code
Node.js enables developers to make use of both synchronous and asynchronous code. As a Node developer, you probably build web apps most of the time, so the best way to avoid blocking threads is to use async code.
When it comes to the web framework, synchronous code can only be used to write scripts or CLI commands that have nothing to do with web apps.
Avoid Blocking
In general, you should put all of your required statements at the top of the file. This will halt the execution because they are synchronous.
Node has a simple module loading system that makes use of the CommonJS module format. Using its built-in require function, you can include modules that are in separate files.
Require functions by importing an exported module or file. However, because require is cached, the resolved filename will not change significantly; only the module's code will be executed and loaded into the process's variable.
Additionally, there are no npm modules available. However, even with caching, it is preferable to prioritize your requirement statements. Before defining the server, load the modules to improve performance.
Use of Linter
We should check our code with a linter to find basic quality issues. It ensures that our code does not contain the common antipatterns by looking for them.
Start every projects using npm init
NPM is the best way to add dependencies or couplings. However, npm can be used to explore all Node.js packages, so its use is not limited to these two.
Using npm init, start a new project in Nodejs. By doing this, a new package.json will be created, and you can add a lot of metadata to help other people working on the same project.
In addition, you can include an updated version of Nodejs in the package that adheres to the semantic versioning spec.
Try to use environment variables
Configuration management is a fundamental component of every type of programming language. The process of decoupling the code, services, databases, and other components during development, production, or quality analysis is the primary topic of this section.
In Node.js, you can look up the values in process.env in your code by using environment variables. The NODE_ENV environment variables can be examined.
At this point, the environment variable will be used in your coding by the Node JS Best Practices. Throughout the process of development, it would be used to identify values. command nvm. To avoid confusion, the majority of cloud hosting providers use nvm. In addition, you can use regular expressions, configurations, and other consequent plans.
Learn JavaScript best practices
Learn the best practices for writing JavaScript, particularly those for asynchronous programming, scope, data types, function arguments, JavaScript functions and objects, and callbacks. In addition, you can obtain a serverless code infrastructure with the assistance of Azure Functions or an Azure app service. You can create HTTP endpoints that are responsive using this code infrastructure.
Concatenating many JS files
Shrinking and concatenating multiple JavaScript files is one way to increase application performance. For instance, a block will be created and wait times will increase as a result of a web browser making six separate HTTP requests for each JavaScript file.
Use client-side rendering
Incorporating client-side rendering into your Node.js project will significantly reduce latency while also reducing bandwidth usage. BackboneJS and AngularJS, two client-side JS frameworks, provide APIs that direct JSON responses to the client rather than the server, where each request results in an HTML page.
Make sure app restarts automatically
You handled errors properly. Unfortunately, your application was still down due to a dependency error.
To ensure that the application recovers gracefully from a runtime error, use a process manager at this point. If the entire server on which you are operating broke down, you will also need it to restart. In such a scenario, you would like to have as little downtime as possible and have your application restart as soon as the server is back online!
Avoid Garbage collection with V8 Engine flags
Node (V8) uses garbage collection to manage heap memory. In order to make room for the creation of the new object, it clears the memory that was used by objects that are no longer referenced by the Stack.
However, if your memory usage increases unexpectedly, it may not be the result of memory leaks but rather the idle behavior of the node.
The issue can be resolved by controlling the garbage collector in the app. You can do this by raising flags for the V8 engine and using the chrome debugger to expose the garbage collector for debugging memory issues.
Monitor apps
On production applications, it is essential to be notified whenever something goes wrong with your application. For example, you don't want thousands of irate Twitter users telling you that your servers are down or that your app is broken and has been for a few hours. Therefore, it is essential to have something monitoring you and alerting you to critical issues or abnormal behavior.Keep app stateless
Data such as sessions, user data, and cache that is stored within the application will be restricted to that particular process. As a result, you must store it in external data stores.
Your application can withstand system failures without affecting its services or performance by remaining stateless.
Using serverless platforms like AWS Lambda, which by default enforce stateless behavior, you can accomplish this.
Use APM Monitoring Tools
APM tools are responsible for identifying bottlenecks and repairing errors that affect the application's performance and availability. By examining every web result, highlighting the issue, and keeping track of it, the node.js monitoring tools are able to fix the bugs.
The evaluation of performance metrics, quality issues, bottlenecks, standard errors, etc., is one of the primary goals of using APM tools. and make use of that data to make the necessary adjustments and enhancements.
ScoutAPM, an APM tool, allows developers to evaluate and improve the performance of web apps. In addition, it provides real-time insight that enables quick identification of the issues and modifications to their resolution prior to finalization.
The only application performance monitoring product that overcomes obstacles like stability and performance issues is this APM tool. The most typical difficulties include, for instance, N+1 database queries, slow database queries, and performance anomalies.
Gzip Compression
The majority of clients and servers currently support gzip. When a browser that is compatible with gzip requests a resource, the response time is compressed by the server itself, which reduces latency and time lag. When you respond to clients and send requests to remote servers, Gzip can boost your application's performance.
Node Js is now a standalone, full-stack programming language instead of just a JavaScript library. A successful runtime environment is Node Js. As a back-end and for creating RESTful APIs, it is extensively utilized. However, for optimal performance, it is essential to incorporate Node js best practices into your existing applications.
Node Js has recently been used by big companies like Uber, Walmart, Twitter, and others for better performance and results. Remember: It's always a good idea to hire a professional team of node.js developers because they can help you with everything from writing clean code to other things.
For programmers: It is now time to begin incorporating everything you have learned today into your project. To create fast and scalable node.js applications, you can keep these practices handy and take advantage of the advantages.
