This is part two of a two-part series on how a Wallaroo system reacts to workload demands that exceed Wallaroo’s capacity, i.e., how Wallaroo reacts to overload.

Wallaroo uses three back-pressure techniques to limit message queue sizes of all actors within the system. Together, these techniques form an end-to-end mechanism that protects Wallaroo from high-volume data sources. This article describes how these back-pressure mechanisms are implemented by and integrated with Wallaroo.