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> also, instances die all the time

This where the durability argument has a problem as well.

At a first glance, this looks like an un-replicated system, which means that the loss of an instance is an availability nightmare.

The worrying quote from the article for me is this one

>> With Redis Enterprise, it is easy to create a master-only cluster and have all shards run on the same node

Another node has to be brought in and attached to the same network disk to restore access to that key range?

500k+ ops/sec is nothing to laugh about on a single node with 1:1 read-write ratios, however the fragility of this system is concerning.

Half a decade ago, I was working with row-level atomic ops in ZBase/Membase (set-with-cas[1]), which gets away with using replication instead of an ssd backing the durability of operations + an fsync - the 99% latencies were at 3-4ms, but the scalability and availability were baked in.

[1] - https://github.com/zbase/documentation/wiki/Data-Integrity




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