July 2017
Intermediate to advanced
414 pages
11h 18m
English
The application's initial deployment was simple and straightforward as follows:

The web modules and business modules were deployed into separate application server clusters. The application was scaled horizontally by adding more and more application servers to the cluster.
Zero downtime deployments were handled by creating a standby cluster and gracefully diverting traffic to the standby cluster. The standby cluster is destroyed once the primary cluster is patched with the new version and brought back to service. Most of the database changes were designed for backward compatibility, but breaking changes are promoted with application ...
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