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A comment on IO Devices and Latency. Parent comment

Re:IO Devices and Latency by bddicken on Thursday March 13, 2025 @07:24PM (#43358255)
For PlanetScale Metal, we use semi-sync replication. The primary need to get an ack from at least one replica before committing.
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Re:IO Devices and Latency by anonymousDan on Thursday March 13, 2025 @08:04PM (#43358456)
Is that ack sent once the request is received or once it is stored on the remote disk?
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Re:IO Devices and Latency by alfons_foobar on Friday March 14, 2025 @10:03AM (#43362746)
Soo... We have a network hop after all?
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Re:IO Devices and Latency by bddicken on Saturday March 15, 2025 @04:31PM (#43374962)
For writes, yes. But what if your workload is 90% reads?
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Re:IO Devices and Latency by alfons_foobar on Sunday March 16, 2025 @05:33AM (#43377816)
It makes a lot of sense for read-heavy workloads, for sure!

I was just trying to get a better understanding of what is happening under the hood :)

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