State Machine Replication, and Why You Should Care with Doug Patti
Signals and Threads
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Concord Versioning Problems
The versioning problem is a detail of how concord was built, or a fundamental aspect of this whole approach. It makes it so that as soon as something is written down, you really have to commit to being able to read it back in that same form. So there's a kind of forward compatibility require any message that's written has to be understandable in the future. But essentially, the constraint of reading a single transaction log in an unintermediated way does put some extra constraints.
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