Up till now we’ve looked solely at distributed server technology to host business applications. The is another type used within larger organisations and financial institutions, Mainframe technology. What’s the difference between distributed Server technology and Mainframe? Let’s dive in.
You may want to brush up on the post about N-Tier Architecture if you don’t know what that is.
Today we’re going to look at a very basic resiliency pattern. In fact three of them. One for each tier of our classic three-tier architecture.
A server working by itself is simply just a server or single node. When you have two or more servers that are designed to do the same thing that act like one single system, this is a cluster.
When we traditionally talk about a server we’re talking about a physical computer having a operating system with one or more application/s.
Virtualization allows us to separate the hardware (the actual physical computer) from the operating system and applications. Through virtualization no longer are we limited to one physical computer having only one operating system.
A type of client-server architecture. The most common use of multi-tier architecture is the three-tier-architecture.