I’m using Node and Redis.
If I issue a redis.set() command, is there any chance that whilst that is being set, another read can occur with the old value?
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I’m using Node and Redis.
If I issue a redis.set() command, is there any chance that whilst that is being set, another read can occur with the old value?
No, you will never have that problem. One of the basic virtues of Redis is that it has a tight event loop which executes the commands, so they are naturally atomic.
This page has more on the topic (see subheading “Atomicity”), and about Redis in general.