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Concurrency issue: same accountId "Transfer" messages ignored #1

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VictorGil opened this issue Aug 24, 2019 · 0 comments
Open

Concurrency issue: same accountId "Transfer" messages ignored #1

VictorGil opened this issue Aug 24, 2019 · 0 comments
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@VictorGil
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When more than one "Transfer" messages with the same accountId are taken from the "transfers" Kafka topic in the same batch, then the balance changes are applied to the same "AccountBalance" object, instead of being applied serially.
This has the effect of balance updates being lost, and hence, the balance becomes incorrect.
You may see the 10th part of the related YouTube video.
@VictorGil VictorGil added the bug Something isn't working label Aug 24, 2019
@VictorGil VictorGil self-assigned this Aug 24, 2019
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