How To Improve The Performance Of Apps Building In Expressjs? |
Posted: June 14, 2019 |
This particular article mainly focuses on the way to improve the performance of apps building in Expressjs. So, these important points are always needed to be considered by an Express js development company. Production Best Practices: Reliability And PerformanceIn this regard, it is very much important to discuss the performance and also reliability best practices for the Express applications which are mainly deployed to the production. Along with that, this particular topic mainly falls into the DevOps world which thereby spans both the operations and also traditional development. So, the important information is majorly divided into two parts:
The Dev Part
The Ops Part
Things Which Are Needed To Be Done In Your CodeThe above-given things generally play a very important role in the improvement of the particular performance of your application. Use Gzip Compression The particular size of the response body can be greatly decreased with the help of Gzip compressing. So, it helps in the increase of speed of a particular web app. Along with that, the compression middleware also can be used for the gzip compression in your Express app. For example: var compression = require(compression') var express = require('express') var app = express() app.use(compression()) Do Not Use Synchronous Functions Synchronous functions and also methods generally tie up the executing process until they return. Also, a single call to synchronous functions might return in a few microseconds or milliseconds. However, in case of high traffic websites, these calls gradually add up and thereby reduce the performance of the app. Along with that, it is also very important to avoid their use in production. Do Logging In A Correct Manner In general, there are mainly two reasons for the logging from your particular app. It generally applies for logging app activity and also debugging. One of the most common practices in development is the usage of console.log() or console.error() to print log messages to the terminal. But, these particular functions are considered to be synchronous whenever the destination is considered to be a terminal or a file. So, they are not always suitable for production unless you are involved in piping the output to another program. Handle Exceptions Properly It is very important to handle the exceptions in a proper manner. Your Express app usually crashes and go offline without proper exceptions and also taking appropriate actions. It is also important to follow the advice so that it ensures your app to be automatically restarted. Also, your app will mainly recover from a crash. Things Which Are Mainly Needed To Be Done In Your Environment/SetupSet NODE_ENV To “Production” The NODE_ENV environment variable is involved in specifying the environment in which a particular application is running. It also includes production or development. So, the simplest things which can be done in this regard is to set NODE_ENV to “production”. Ensure That Your App Starts Automatically Always in the production, you do not generally want your application to be offline. This means that you need to make sure that it restarts if the server itself crashes and also the app crashes. Running Your App In A Cluster It is also very much important to ensure the running of the app in a cluster. Again, it is possible to increase the overall performance of a Node app many times with the help of launching a cluster of processes. A cluster preferably runs multiple instances of the app. So, it includes ideally one instance on each CPU core. Cache Request Results Another strategy is to particularly improve the performance in production which includes catching the result of requests. Also, your app generally does not repeat the operation in order to serve the same request repeatedly. Using A Load Balancer A single instance is sufficient to handle only a limited amount of traffic and load. In this regard, it does not matter how optimized a particular app is. One important way effective for scaling an app is to particularly run multiple instances of it and thereby distributing the traffic via a load balancer. Using A Reverse Proxy A reverse proxy mainly sits in front of a particular web app. It is also involved in performing the supporting operations on the requests. This is apart from directing requests to the particular app. It can contribute to handling compression, error pages, serving files, catching and also load balancing among the other things.
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