Regardless of how high your performance targets, performance optimization
is best started at low scale and volumes since it is easier to measure
and evaluate under these conditions. The key objective here is to
evaluate the performance of a single instance deployment against the
system resource consumption, there is little point scaling an application
until the performance of a single instance deployment suggests that
it can meet your performance targets when fully scaled. For example
if your application runs at 10% of your TPS target but is utilizing
25% of your available CPU then it is very unlikely it will scale successfully,
if however you are utilizing 8% of total CPU then in theory, assuming
linear scaling, you would expect to scale successfully. An example
of a single instance deployment of the sample application is shown
below:
Figure 1. Single instance deployment example
Optimization of the single instance deployment should focus on
the following items:
