April 2018
Intermediate to advanced
468 pages
14h 34m
English
Content preview from Mastering Kubernetes - Second Edition
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Adapter pattern
The adapter pattern is about standardizing output from the main application container. Consider the case of a service that is being rolled out incrementally: It may generate reports in a format that doesn't conform to the previous version. Other services and applications that consume that output haven't been upgraded yet. An adapter container can be deployed in the same pod with the new application container and can alter its output to match the old version until all consumers have been upgraded. The adapter container shares the filesystem with the main application container, so it can watch the local filesystem, and whenever the new application writes something, it immediately adapts it.
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