> I didn't expect a 10% slowdown for Redis Pretty sure you misunderstood. If you forced redis use an SSD (persistent storage) for everything redis normally use

> I didn't expect a 10% slowdown for Redis Pretty sure you misunderstood. If you forced redis use an SSD (persistent storage) for everything redis normally uses DRAM for and only observed a 10% slowdown, it would be a goddamn miracle! > how much of the total workload time do they take up If you're talking about a read-heavy workload, the only good thing about Optane is that it's a little cheaper than DRAM. But those workloads are easy to scale (just buy 2x caches to get 2x throughout) so they're often not worth discussing. Also reposting my comment from above: > PCIe Optane was a thing and it achieved 10us latency whereas today's fastest SSDs get 40us. IIRC the DIMM version of Optane was <1us, literally an order of magnitude faster!