Design Microservices Architecture with Patterns and Principles - Vertical Scaling - Scale Up

The video tutorial explains vertical scaling, which involves enhancing a single server's capacity by adding more resources like CPU, RAM, and disk space. It highlights that while vertical scaling allows for increased capacity without changing existing code, it has limitations due to hardware constraints and can become costly. When a single server reaches its maximum capacity, horizontal scaling, or adding more servers, becomes necessary to handle increased requests.

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