Prototype
The prototype design pattern allows you to avoid expensive initialization routines when you construct objects that are very similar. The goal is to minimize the amount of work needed in creating new objects when the initialization routines are expensive. For example, if the initialization routine requires database queries, file lookups, or service calls and you already have other objects in the system that are very similar to the object you are constructing, then the prototype pattern may help you to avoid those expensive initializations.