In the past, performance issues were often solved by investing in infrastructure. This approach worked fine in some cases, but those days are long gone.
In our highly distributed microservices-based IT landscape, the most significant performance issues are no longer related to networks or infrastructure.
Most performance issues are design-related based on our experience from several hundred performance investigations.
For instance, if a single user clicks results in ten web service calls, the response time might not be acceptable to users from abroad. Your only chance to solve such performance problems is to rework your application design to improve the communication pattern.
Therefore, don’t underestimate the impact of performance on your application design. Verify application and page design during the development stage and follow web performance best practices from Google and Yahoo.