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Potential alternatives:

- https://github.com/dragonflydb/dragonfly (BSL-licensed, aka not OSS).

- https://github.com/Snapchat/KeyDB (BSD-licensed)

Anyone using one of these?

I've tried KeyDB a few years ago, performance was significantly better than Redis. Didn;t test the spill-to-disk feature for data sets larger than RAM. Not sure if it's kept up with Redis on advanced features like HyperLogLog.

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