A common problem that developers find themselves faced with is that they have an operation that spends a lot of time waiting for something to happen, as well as other operations which do not depend on the results of that first operation. It can be frustrating to wait for the slow operation to complete when there are other things the program could be doing. This is the fundamental problem that asynchronous programming tries to solve.
This problem becomes most noticeable during IO operations, such as network requests. In our aggregation process, we have a loop which issues
