System Design : SQL vs NoSQL databases

Thanks, Vinod Sir for your kind comment.

To answer your question:

SQL databases typically scale vertically, which means that to handle an increased load, you add more resources (like CPU, RAM, or storage) to a single server. This approach is often referred to as "scaling up." While it can improve performance, it has its limits and can become costly as you need more powerful hardware.

On the other hand, NoSQL databases are designed to scale horizontally. This means that instead of adding more resources to a single server, you add more servers to handle the increased load. This approach is known as "scaling out." It allows for better distribution of data and can handle larger amounts of traffic by spreading the load across multiple servers.

In summary, vertical scaling (SQL) involves enhancing the capacity of a single machine, while horizontal scaling (NoSQL) involves adding more machines to distribute the load.

I hope this clarifies the difference! If you have any more questions, feel free to ask.