Architecture of the Server Infrastructure
Most systems use a tiered architecture, with multiple servers within each tier, as shown in Figure 9-1. Each tier has a set of servers that carry out the same function. Multiple servers in a tier can increase performance and availability because distribution of workload across redundant instances can absorb a failure. Multiple servers can also increase the flow volume because multiple flows are spread across the tier, increasing parallelism and reducing the time for application processes to execute.
Figure 9-1. Web Service Delivery Architecture
Web applications are in the first tier. They are customer ...
Get Practical Service Level Management: Delivering High-Quality Web-Based Services now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
