- Too many interactions with the host. Each interaction increases unpredictability and contributes to js performance lag. It is impossible to avoid such interactions, but you should keep them to a minimum.
- Poor event handling. This results in executing events repeatedly without your knowledge.
- Inefficient iterations that take up much processing time.
The most useful tools are the frontend monitoring ones. They allow you to effectively measure your website’s or application’s performance. You can easily track speed, errors, functionality, and availability.
- Speed: slow loading resources cause a terrible user experience. You can use application performance indices like Apdex to figure out the target response time. The page speed is mainly affected by the size of resources and the number of requests.
- Availability: it is essential to have insights into how your users experience your website. You can use real user monitoring tools like Sematext Experience to follow the user’s progress throughout the app giving your information about how users interact with the app and what kind of responses they are getting.
Summing up, when it comes to front-end development tools for web performance optimizations, you may try Sematext, Appsignal, or Sentry.
Back-end development means creating logic behind the application. Some tools and frameworks enable developers to audit performance, and one of the most recommended ones is Node.JS – a framework for server-side programming by developers. Node.JS performance monitoring is the collection of Node.JS performance data and measuring its metrics to meet the desired service delivery. Node.JS performance monitoring checks the app’s availability, logs, and metrics and reports the metrics’ dysfunction. Thanks to Node.JS performance monitoring, developers can get a detailed, intelligence-based view of the behavior of each architecture component. Therefore, you may manage the performance for an optimal experience for both the end-users and the developers.
Poorly handling your events negatively affects website performance. When you manage the event handlers properly, you can reduce the depth of your call stack and, thus, improve performance. Be cautious, though; if you don’t keep track of events, they can execute repeatedly without your knowledge. You can use plugins like the Event Management Accelerator to enhance event management performance.
When it comes to websites, images are a vital part. Most websites use at least a few of them because they help improve user engagement. However, if images aren’t optimized, using them may affect the front-end loading times. Image optimization means reducing the size so the images can be loaded quicker. When you reduce the size, there is less data to be loaded. Therefore, website performance is improved, and server load is reduced.
It helps to improve loading times further. Lazy loading means the practice when the page only loads the required content first. The remaining content is loaded when the user needs it. For example, only a small set of images is loaded first, significantly reducing the loading time.