December 2017
Intermediate to advanced
468 pages
13h 12m
English
book
Architectural Patterns
by Anupama Murali, Pethuru Raj, Harihara Subramanian J, Pethuru Raj Chelliah
Content preview from Architectural Patterns
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Shared caching layer pattern
All the instances of any microservice at any point in time have the same data requirements, so it makes a lot of sense to have and share a caching layer across these instances. This practice is often not followed when each instance has its own internal cache in its memory for storing session state. This sort of arrangement fragments data across different instances that should be treated as a whole. Sharing a caching layer eliminates the operational complexity that results from this otherwise fragmented data tier, but it places requirements on the shared caching layer.
The application layer has a single view of user data and it is accessible through any instance. When using a shared cache, updates to data are available ...
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