A cached page can be fast while checkout is still slow. Same site. Different work.

Caching serves saved content instead of rebuilding it for each request. Checkout and account pages may need fresh, user-specific processing. A shipping plugin or a database query can still be the bottleneck, even with caching, a CDN and edge caching available.

That is why I would investigate the application before buying more hosting capacity. Traffic growth alone does not identify the bottleneck.

My starting point for evaluating Kinsta is not its feature count. It is whether I can separate infrastructure work from application work, then assign responsibility for both.

Less exciting than comparing plan badges. More useful.

First, find out what is actually slow

Kinsta includes MyKinsta analytics and a built-in application performance monitoring tool.…