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Right, because we write against DynamoDB/Etcd transactions were a non-option anyways, and we only have CompareAndSwap as a locking primitive

In addition to that Golang's context

is used to broadcast the failure of a distributed operation and release associated resources with it

DynamoDB has transactions now.

It's probably closer to multi-writes though, than transactions in a classic sense, but good improvement nevertheless.

It's a real transaction like MySQL or PG.