advancedDistributed Transactions: Why 2PC Fails at Scale
Why does 2PC rarely survive contact with real production microservices despite being theoretically correct?
It requires every participant to hold locks from the Prepare phase until Commit completes — if the coordinator itself crashes in between, participants can be left holding locks indefinitely, and it also requires every participating data store to support the same distributed-transaction protocol, which most NoSQL stores and message brokers don't.
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