Re: Uniqueness of [cart] (was Re: Number of cars in cart...)
This WebDNA talk-list message is from 2004
It keeps the original formatting.
numero = 58270
interpreted = N
texte = Joe D'Andrea wrote: > What happens to the uniqueness of the cart when the server's date > changes, say during the switch from daylight savings to standard time > (or vice versa)? Nothing. The cart value is based on UTC (formerly known as GMT) no matter where the server is located. The cart value is a monotonically increasing, guaranteed unique value _per server_ - it is possible to have the same cart value on two different servers. Don't think and drive - it's dangerous! ;) John -- John Peacock Director of Information Research and Technology Rowman & Littlefield Publishing Group 4501 Forbes Boulevard Suite H Lanham, MD 20706 301-459-3366 x.5010 fax 301-429-5748 ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list
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Joe D'Andrea wrote: > What happens to the uniqueness of the cart when the server's date > changes, say during the switch from daylight savings to standard time > (or vice versa)? Nothing. The cart value is based on UTC (formerly known as GMT) no matter where the server is located. The cart value is a monotonically increasing, guaranteed unique value _per server_ - it is possible to have the same cart value on two different servers. Don't think and drive - it's dangerous! ;) John -- John Peacock Director of Information Research and Technology Rowman & Littlefield Publishing Group 4501 Forbes Boulevard Suite H Lanham, MD 20706 301-459-3366 x.5010 fax 301-429-5748 ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://webdna.smithmicro.com/
John Peacock
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