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A comment on The Set data structure saved me from a world of pain. Parent comment

Re:The Set data structure saved me from a world of pain by root993 on Tuesday October 20, 2020 @06:39AM (#24835840)
For a very large database where the count would be filtered based on status of the conversations and running this query for every single support channel would be expensive would it not?
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Re:The Set data structure saved me from a world of pain by afandian on Tuesday October 20, 2020 @11:16AM (#24838299)
Probably less expensive than Redis.

Given that the SQL approach is the standard one, I'd personally expect load testing to demonstrate that it didn't scale before doing something unusual.

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