In this chapter, we discussed a topic that helps to reduce downtime during planned operational windows, such as the Elastic IP pattern. We also discussed a few patterns that help to make resilient server architectures, such as the multi-server pattern, which helps to maintain servers over general failures and traffic spikes, as well as the multi-data center pattern, which helps to create more resilient tiers that can withstand availability zone outages. The last pattern that we discussed is the deep health pattern, which aims to change the thought process on how to handle architectures where servers cannot be reached from the load balancers themselves.

In the upcoming chapter we will discuss patterns to process static data.