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Thanks! So, I didn't consider performances at all, as it's not the goal of the project, but it would be interesting to have a look. Good idea!

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Yes it's definitely not about winning, if you can get say 75% of Redis performance with simpler and memory safe code I'd say that is a big win and great advertising for the book! And maybe some examples of how performance can be improved/optimisations made also improves the book!

You might be able to get near 100% of Redis performance without a lot of tuning. Redis has a lot of overhead to make it a production ready system like performance counters, safety checking, and conditionals for features like replication/clustering/etc which slows it down.

Hell, you might even be able to use a concurrent hash map implementation and show multi-threaded performance much better than Redis :).

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