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A comment on Do you need Redis? PostgreSQL does queuing, locking, and pub/sub. Parent comment

Re:Do you need Redis? PostgreSQL does queuing, locking, and ... by xxs on Monday November 04, 2024 @04:18AM (#42039858)
>I think Redis itself does something like this)

It does... and it's a blocking operation (Bad). It's used when storing data to a file to allow restarts w/o losing the said data.

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Re:Do you need Redis? PostgreSQL does queuing, locking, and ... by throwaway81523 on Monday November 04, 2024 @11:00PM (#42048490)
Do you mean fork is a blocking operation? That's surprising but hmm ok. I didn't realize that. I thought that the process's pages all became copy-on-write, so that page updates could trigger faults handled by in-memory operations. Maybe those could be considered blocking (I hadn't thought of it like that) or maybe you mean something different?
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