How Discord supercharges network disks for extreme low latency

Re:How Discord supercharges network disks for extreme low la... by davidw on Monday August 15, 2022 @06:51PM (#32476559)

Regarding ScyllaDB:

> while achieving significantly higher throughputs and lower latencies [compared to Cassandra]

Do they really get all that just because it's in C++? Anyone familiar with both of them?

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Re:How Discord supercharges network disks for extreme low la... by TheGuyWhoCodes on Monday August 15, 2022 @08:19PM (#32477560)

Cassandra is written in Java and while there are a lot of tricks to optimize it there are limits.

While C++ does have an advantage of raw performance it's ScyllaDB's seastar implementation that helps a lot. Think of every core in the machine as a node so there is no context switching and better use of the cpu cache. More than that the ScyllaDB team are extremely performance focused something that I can't say for Cassandra

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Re:How Discord supercharges network disks for extreme low la... by benlwalker on Tuesday August 16, 2022 @01:18AM (#32479450)

It's the architectural choices more than the language (one thread per core, async, event loops). But I'm sure the c++ does have some benefit over Java.

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