Change VAPID expiration from 24h to 12h #101
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The default value of 24h is not a safe default value. Sometimes when you restart a server and the clock is wrong by a few seconds, it may result in notifications being rejected by Google Firebase. Note that 24h is the limit for Firebase, so even a small bias can cause issues. 12h is a better default because it ensures the notification delivery even if the clock is not perfect. 12h is the average between 24h (max) and 0 (min) and, given a random deviation in the clock, it maximizes the probability of successful notifications.
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The default value of 24h is not a safe default value.
Sometimes when you restart a server and the clock is wrong by a few seconds, it may result in notifications being rejected by Google Firebase.
Note that 24h is the limit for Firebase, so even a small bias can cause issues.
12h is a better default because it ensures the notification delivery even if the clock is not perfect.
12h is the average between 24h (max) and 0 (min) and, given a random deviation in the clock, it maximizes the probability of successful notifications.