June 2019
Beginner to intermediate
770 pages
19h 24m
English
Content preview from Mastering Object-Oriented Python - Second Edition
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Schema evolution
When working with a public-facing API for RESTful services, we have to address the schema evolution problem. If we change a class definition, how will we change the response messages? If the external RESTful API must change for compatibility with other programs, how do we upgrade the Python web services to support a changing API?
Often, we'll have to provide a major release version number as part of our API. This might be provided explicitly as part of the path, or implicitly via data fields included in the POST, PUT, and DELETE requests.
We need to distinguish between changes that don't alter the URI paths or responses, and changes that will alter a URI or response. Minor changes to functionality will not change a URI or ...
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