In a Study of Go Daddy WordPress sites, we found:
There are no caching plugins in the top 10 list.
What does this mean for developers? Page caching isn’t as common as you might like. You can’t count on a page cache to speed up your code. Make sure you’re writing fast code and learning about performance.
89.62% of plugins are installed 50 times or less.
We have a saying here at Go Daddy: “Every site is a snowflake.” Every WordPress site is a unique combination of a theme, active plugins, traffic, and data. If you try to develop for an “average WordPress site,” you will miss the mark. Make sure you test the corner cases in your plugins.
75% of sites have 8 or fewer active plugins.
There is a popular myth that sites are slow because they have too many plugins. That’s not true. If a site is slow because of plugins, then it’s slow because of the wrong plugins (or theme!).
If you’re a developer and you want to learn how to write a better plugin, take a look at the following resources: