August 2018
Intermediate to advanced
260 pages
5h 48m
English
Content preview from Microservices Development Cookbook
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Evolving APIs
APIs are contracts between clients and servers. Backward-incompatible changes to APIs can cause unexpected errors for clients of the service. In a microservices architecture, precautions have to be taken to ensure that changes to a service's API do not unintentionally cause cascading problems throughout the system.
A popular approach is to version your API, either through the URL or via content negotiation in request headers. Because they're generally easier to work with, and often easier to cache, URL prefixes or query strings tend to be more common—in this case, the API endpoint is either prefixed with a version string (that is, /v1/users) or called with a query string parameter specifying a version or even a date (that is, ...
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