Learning Functional Programming in Go

Strategy pattern

The strategy pattern uses composition rather than inheritance to choose which behavior is executed. The behavior in our example implements a load balancing algorithm. Production implementations of the strategy pattern often have an administrative application that is used to choose which strategy it selected during runtime:

Rather than using the context of the request or configuration instructions from an administrative application to selecting our load balancing strategy, we hardcode our example to use the RoundRobin behavior.

Here's the call:  

LoadBalancing(RoundRobin(0, "web01:3000", "web02:3000", "web03:3000")),

The first ...