Below are some general considerations for optimizing web performance:
File Size: Even if you have implemented various optimization techniques, if your page has 2mb+ of data, this will slow down most end users. Think about whether you need larger image files or to have multiple images on your web page.
Application Performance Look at every page and process and see if there are ways to make improvements to the coding.
User load Test to see if your application can handle a large number of users. Check for any problems related to code, hardware, etc.
Infrastructure Check to see if routers, switches, load balancers, and other various machines have any issues such as over-utilization or misconfiguration.
Location for Datacenter & ISPs Make sure that you use data centers close to where your end users are.
In addition, Catchpoint offers various web performance optimization techniques and tips in our blogs.
Catchpoint offers tips in the blog: Monitoring 101, which goes over the importance of monitoring and evaluating different components for the webpage. There are also some techniques listed as well:
We also offer examples of dealing with web failures, here are some recent ones:
- http://blog.catchpoint.com/2016/04/22/third-party-failure-jet/
- http://blog.catchpoint.com/2016/01/22/online-shopping-performance/
Here are other resources to look for best practices:
- https://developers.google.com/speed/docs/best-practices/rules_intro?csw=1
- http://www.w3.org/TR/mwabp/
Also, Planet Performance is a good place to find the latest news on web performance: