As the application use grows within your organization, adding additional server nodes is the best way to achieve required performance and scalability.
If your application usage exhibits a seasonal or periodic variation (for example, the average load on the system quadruples during month-end closing or a plant closes for a week every quarter), then consider adding, or removing, application server nodes to manage these seasonality usage spikes.
To mitigate risk of degraded performance and undesired downtime, it is crucial to understand the business cycles of the organization and to plan for the required level of performance, availability, and scalability.
There are two ways to add application server nodes in a deployment:
- Vertical clustering
- Horizontal clustering