Hands-On Reactive Programming in Spring 5

Zip operator

One more operator that we will look at is zip. This has a more complex behavior, as it combines values from two parallel streams by applying a zip function. It is often used for data enrichment, especially when parts of an expected result are retrieved from different sources, as shown in the following diagram:

Diagram 2.10 Zip operator: combines the emissions of multiple Observables together via a specified function and emits single items for each combination based on the results of this function

Here, Netflix uses a zip operator to combine movie descriptions, movie posters, and movie ratings when streaming a list of recommended ...