Databases Reference
In-Depth Information
Now suppose that we add one more server, and the system's capacity doubles, as shown
in
Figure 11-2
.
Figure 11-2. A linearly scalable system with two servers has twice the capacity
This is linear scalability. We doubled the number of servers, and as a result, we doubled
the system's capacity. Most systems aren't linearly scalable; they often scale a bit like
Figure 11-3
instead.
Figure 11-3. A system that doesn't scale linearly
