How to write highly loaded web api applications?

Question

Highload

Good afternoon.
How to write highly loaded projects? What tools and tools do you use? Priority on .NET. Who can share the experience. Interested in peak loads on the database.
THANKS TO ALL

Answer 1

I advise you to read about the microservice architecture, for highly loaded systems it is the most. As for the tools, everything directly depends on the tasks that will be set for it. About the database is similar, it all depends on the type of database used (SQL\NoSQL) and its architecture.

Answer 2

As a rule, the entire load will be collected on the database server. And there, in addition to the database type, there are enough subtleties even with banal samples. Instruments? The main task is to identify bottlenecks. A database server profiler, for example, can be very useful.