Why do we need the cache if we don't read from it about cqrslite HOT 4 CLOSED

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what if an exception accord when the read model save to the read repository because network issue or something else.
how can we undo the save in the write model?

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If your code is synchronous then you could do the whole thing in one transaction and rollback. If you where to use a asynchronous callback you have to handle errors like that yourself. You probably don't want to undo the write model, but rather retry applying to the read model or do something manually to correct the error.

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Yes you right, if an error accord in read model i should reply the events that we recorded in event store
but in this case we need an advanced Error Monitring & Notification System

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