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Why the command needs to tell the expected version? #40

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Narvalex opened this issue Jul 20, 2017 · 4 comments
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Why the command needs to tell the expected version? #40

Narvalex opened this issue Jul 20, 2017 · 4 comments

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@Narvalex
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@gautema
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gautema commented Jul 20, 2017

This is to support optimistic concurrency

@Narvalex
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I understand, but, shouldn't it be optional? Since there are lots of event sourcing implementations that does not wraps the optimistic concurrency check all the way from the read model, but from the aggregate hydration, like the Microsoft's Patterns a Practice CQRS Journey?

@gautema
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gautema commented Jul 24, 2017

It is optional. The value is nullable.

@Narvalex
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Fair enough. Thanks

@binarymash binarymash mentioned this issue Feb 25, 2018
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@gautema @Narvalex