Flyweight
In boxing there is a light weight division between 49-52 kg known as the flyweight division. It was one of the last divisions to be established and was named, I imagine, for the fact that the fighters in it were tiny, like flies.
The flyweight pattern is used in instances when there are a large number of instances of objects which vary only slightly. I should perhaps pause here to mention that a large number, in this situation, is probably in the order of 10,000 objects rather than 50 objects. However, the cutoff for the number of instances is highly dependent on how expensive the object is to create.
In some cases, the object may be so expensive that only a handful are required before they overload the system. In this case introducing ...
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