May 2019
Intermediate to advanced
504 pages
11h 50m
English
Content preview from Hands-On Mobile Development with .NET Core
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Entity tag (ETag) validation
Naturally, in most cases, our previous assumption about static data would fail us, especially when dealing with an entity like Auction, where the data entropy is relatively high. When the view-model is created, we would need to make sure that the application presents the latest version of the entity. This would not only avoid incorrect data being displayed on our view, but also avoid conflict errors (that is, referring to timestamp integrity checks on Cosmos DB).
In order to achieve this, we would need a validation procedure to verify that the entity at hand is the latest one and that we don't need to retrieve a newer version. The Entity tag (ETag) is part of the HTTP protocol definition. It is used as part of ...
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