anyone got a hint on a slice of code to do that short url magic? if I were to start now, I guess I'd wait for the object to store in the DB, get the primary key integer and modular arithmetically pick a character from a set and add that to a character lineup which should reflect a unique choice of characters that is very, very short even with large integer keys.
On Aug 19, 2011, at 1:27 PM, Travis Britt wrote: > Yep, all depends on the number of potential collisions you care about. In > semi-controlled environments you can make do with fewer bits of uniqueness. > > tb > > On Aug 19, 2011, at 1:13 PM, Jesse Tayler wrote: > >> how about those modern looking bit.ly type id's ? >> >> seems like you can take the key or counter value and mod your way through a >> set of characters and build up a super-short id - no? >> >> I have ERRest doing my work right now, but I'll be wanting to email URLs to >> the web app and figured I'd prefer not to show id's but rather could use a >> counter like bit.ly urls and I haven't yet looked into that. >> >> Thoughts? Ideas? Suggestions? >> >> >> >> On Aug 19, 2011, at 1:04 PM, Travis Britt wrote: >> >>> You're close to a real uuid at that point. The common problem is multiple >>> instance coordination, can be a lot easier just to have the DB assign a >>> unique value since you're probably coordinating there anyway. But it all >>> depends on your app, your db, your scaling characteristics, how many >>> potential collisions you're willing to risk…. >>> >>> http://download.oracle.com/javase/1.5.0/docs/api/java/util/UUID.html >>> >>> tb >>> >>> On Aug 19, 2011, at 12:14 PM, Jesse Tayler wrote: >>> >>>> Hi Travis- >>>> >>>> Is it impractical? >>>> >>>> I've used a simple date+rand constructor and ran it through an encoding to >>>> HEX to get a 'random' object id and had no troubles with that. I suppose >>>> it has limits to uniqueness in theory but it was quick to generate. >>>> >>>> I was also about to start looking for something more short, like bit.ly >>>> urls ? More like a mod-counter with a nice set of case-sensitive >>>> characters. >>>> >>>> I was just about to ask if someone know's of a good slice of code or >>>> method to do just that so I could adopt something more modern? >>>> >>>> I figured for certain WO URLs it might be clean and won't expose id >>>> ordering in a URL so I'd write an apache rule or two and use an object-id >>>> like the die above? Not smart? >>>> >>>> On Aug 19, 2011, at 8:15 AM, Travis Britt wrote: >>>> >>>>> Unless you're generating a true guid that's impractical to do in a >>>>> general way at the app level. >>>>> >>>>> tb >>>>> >>>>> On Aug 19, 2011, at 8:03 AM, Kevin Hinkson wrote: >>>>>> This should be a common issue then. So I'm surprised there isn't some >>>>>> kind of slug generator that handles ensuring uniqueness in Wonder. (or >>>>>> is there?) >>>>> >>>>> _______________________________________________ >>>>> Do not post admin requests to the list. They will be ignored. >>>>> Webobjects-dev mailing list ([email protected]) >>>>> Help/Unsubscribe/Update your Subscription: >>>>> http://lists.apple.com/mailman/options/webobjects-dev/jtayler%40oeinc.com >>>>> >>>>> This email sent to [email protected] >>>>> >>>> >>> >> > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Webobjects-dev mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/webobjects-dev/jtayler%40oeinc.com > > This email sent to [email protected] > _______________________________________________ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to [email protected]
