Re: [cart]'s ever get recycled?
This WebDNA talk-list message is from 2000
It keeps the original formatting.
numero = 31695
interpreted = N
texte = SM (or anyone) can you *guarantee* that if I use cart numbers for a few hundred thousand recordIDs that in 10 years+ there will be no chance that when an admin creates a new record and goes to assign its ID that the [cart] will not load a duplicate that was used before?-JohnKenneth Grome wrote:> >How does WebCat generate cart numbers? > > Something to do with the date, time, and an index value that's > generated internally by webcat. Please note, this is NOT the method > they use, but I think it's something similar, based on the info I've > received from Grant over the years -- and something like this would > explain the fact that the cart values can vary in length from 10-15 > digits (more or less): > > 1- An algorithm creates a date value from today's date, such as > 2000130 (year 2000, 130th day of the year). > > 2- Another algorithm creates a time value from the current time, such > as 13272 (13,272nd second of the day). > > 3- An index value is created if two cart values are generated during > this particular second in time, such as 4 (4th new cart value created > this second). > > 4- The three strings above are appended: 2000130132724 > > ================================ > Kenneth Grome, WebDNA Consultant > 808-737-6499 http://webdna.net > ================================ > > - ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list
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SM (or anyone) can you *guarantee* that if I use cart numbers for a few hundred thousand recordIDs that in 10 years+ there will be no chance that when an admin creates a new record and goes to assign its ID that the [cart] will not load a duplicate that was used before?-JohnKenneth Grome wrote:> >How does WebCat generate cart numbers? > > Something to do with the date, time, and an index value that's > generated internally by webcat. Please note, this is NOT the method > they use, but I think it's something similar, based on the info I've > received from Grant over the years -- and something like this would > explain the fact that the cart values can vary in length from 10-15 > digits (more or less): > > 1- An algorithm creates a date value from today's date, such as > 2000130 (year 2000, 130th day of the year). > > 2- Another algorithm creates a time value from the current time, such > as 13272 (13,272nd second of the day). > > 3- An index value is created if two cart values are generated during > this particular second in time, such as 4 (4th new cart value created > this second). > > 4- The three strings above are appended: 2000130132724 > > ================================ > Kenneth Grome, WebDNA Consultant > 808-737-6499 http://webdna.net > ================================ > > - ------------------------------------------------------------- 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://search.smithmicro.com/
John Butler
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