#21 new
Deleted User

Tags should have predicates

Reported by Deleted User | September 30th, 2010 @ 04:20 PM

A predicate is an algorithmic modification to a set of nodes/resources represented by a tag.

For example, given a tag web_array the following would be possible predicates.

web_array[10] grab 10 nodes

web_array[1%] grabs 1% of the nodes in the array

web_array[random] grab a random selection of nodes

It should also be noted that the predicates should be deterministic unless it's clear that it's not (like random). The condition is that the resource model does not change between invocations. Perhaps even more fine grain is that any nodes identified in a pervious run are attempted first (queried from the resource model) and only if they don't match exactly are new ones replenished.

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