[stable27] redis: use atomic operations everywhere #38538
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This removes a lot of acrobatics in the code and does each operation atomically using a lua script. This also reduces several round trips to the server, and the scripts are compiled and cached server-side. Notably, since all operations work only on a single key (except clear, which is broken anyway and shouldn't be used), they will continue to function and be atomic for Redis cluster. Signed-off-by: Varun Patil <varunpatil@ucla.edu>
Signed-off-by: Robin Appelman <robin@icewind.nl>
Signed-off-by: Varun Patil <varunpatil@ucla.edu>
backportbot-nextcloud
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feature: caching
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CarlSchwan,
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juliusknorr and
pulsejet
ChristophWurst
approved these changes
May 31, 2023
skjnldsv
approved these changes
Jun 1, 2023
skjnldsv
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4. to release
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backport of #37758