The balance between the readability of the code and its optimization should be maintained at all times. You should never compromise the performance of an application over its development time. Rushing through the process for the sake of achieving faster time-to-market will make matters even more complicated.
Performance is a deciding factor in the success (or failure) of any web application. Frequent web crashes and long waiting times are annoying for visitors.
Kissmetrics found that:
- 47 percent of visitors expect a website to load in less than 2 seconds.
- 40 percent of visitors leave the website if the loading process takes more than 3 seconds.
I will tell you 9 tips that you can use to notice a multi-fold improvement in the performance of your application. Let’s get started with them.
- If a library was included by mistake and is not necessary, eliminate it as well.
Cache in the browser
Developers use scripts to provide access to a certain object. By storing such objects inside the memory of a user-defined variable, and using a variable in subsequent references to that object, you will notice an immediate improvement in performance.
Avoid memory leaks
The Java Virtual Machine (JVM) continuously analyzes an application during its lifecycle and detects objects that are not in use anymore. These objects are collected as garbage. A memory leak is a situation when the JVM is unable to recognize the unused objects, thus leading to the accumulation of garbage in the system.
During a memory leak, the loaded page will gradually occupy all of the available memory of the device and severely affect the performance.
In Chrome Dev Tools, memory leaks can be analyzed by recording a timeline in the Performance tab.
Establish well-defined environments for testing
As a developer, you need to test the applications before they go live, and testing the code requires a set of well-defined environments.
So, you should go a step further to establish well-defined testing environments, so that the application does not suffer from poor performance later on.