How Serving Web Apps Work

Question

I was wandering (because though I am a programmer I am not good with networking) if I have a site with multiple databases for user accounts, what unifies those servers/multiple databases so it doesn't check the wrong database or sever. So when I go from having 1 server to multiple, will I be able to keep the same application and the databases will expand into those server? If someone suggested a book that would be great!

Answer 1

Understanding how horizontal scaling works is concept which would give you clear understanding of how that's done.

I suggest you to read articles and books which related to that topic.

There are a lot of good books and articles related to that topic, few of them listed below:

• Understanding Horizontal and Vertical Scaling
• Best Practices For Horizontal Application Scaling
• Building Scalable Web Sites: Building, Scaling, and Optimizing the Next Generation of Web Applications 1st Edition
• 4 Architecture Issues When Scaling Web Applications: Bottlenecks, Database, CPU, IO