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Details in Materialized View pattern - Azure Architecture Center | Microsoft Learn |
Problem
Query only needs a subset of the data from some entities, such as a summary of orders for several customers without all of the order details. How to extract data from relevant entities.
Solution
Typical uses of the events published by the event store are to maintain materialized views of entities as actions in the application change them, and for integration with external systems.
Materialized views, which only contain data required by a query, allow applications to quickly obtain the information they need.
Data it contains is completely disposable because it can be entirely rebuilt from the source data stores.
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