How are you defining server response time?
Server response time (SRT) is the amount of time taken by the web browser to receive a response against the request made. The clock begins as soon as the web browser makes the request with the server. According to Google’s PageSpeed Insights, your server response time should be less than 200 milliseconds.
In other words, Server response time is the amount of time required to load the HTML file of a website from a web server to the client computer (web browsing client). The response time of a server is measured in terms of Time to First Byte (TTFB).
Factors Responsible for Reducing Server Response Time
- Web hosting – A web host provider that uses legacy hardware/software will result in a slower response time. For example, if your hosting provider uses SSD (solid state drive) instead of HDD (hard disk drive) then your server response time will definitely be reduced.
Code Optimization – Code optimization involves analyzing the code and database queries and finding the spots where the code is inefficient and where database queries are slow. After finding these “hotspots,” it’s the job of a developer to fix those problems. Though it is a developer job and very difficult for a person having no programming expertise. But still, the problem can be solved with many paid tools available in the market.
- Traffic on your site– If your website is having huge traffic then you must go for dedicated services and unlimited bandwidth for the hosting. VPS (virtual private server)or dedicated servers are obviously faster than shared servers. But for that, you need to pay more.
- Reduce Bloatware – Nowadays most of the website uses WordPress as CMS (content management system) and WordPress is having millions of plugins available, which results in the accumulation of bloatware if not managed properly. So my advice is to use recommended plugins only and avoid using too much of plugins.
- Compress, Minify, Optimize, and Cache – Caching is a very important factor for response time. Improper caching results in unnecessary waiting periods. The browser must not request assets from the server every time. It must look cache for accessing the information which is needed frequently. If the browser takes information from the cache the server response time reduces a lot. Cache Enabler, Gzip or Brotli, minify your CSS, JS, and HTML files, and optimize your images are easily available in the form of plugins available in WordPress site.
- Use a Content Delivery Network or CDN- A content delivery network (CDN) is a system of distributed servers/network that delivers pages and other Web content to a user, based on the geographic locations of the user, the location of the web page and the content delivery server. If your server is in the USA and you are checking its response time from Asia then its obvious that it will be more.
Tools available in the market to check server response time
There are many more but above-mentioned links are sufficient to do your job.