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by chrsig 1004 days ago
Yes, there's nothing novel about an append only log. What's missing (or unbeknownst to me) is a library or small server that provides a good general purpose implementation.

It's not just a matter of "write to log, done!". Ensuring persistence, keeping track of consumer offsets, transparent compression, waking up consumers on new message availability, support for transactions...

It's not just a append only log that's wanted, it's a system for managing append only logs, without the complications like leadership election, replication, partitioning, etc.