In Mule 4, what are messages referred to?

In Mule 4, messages are referred to as events. An event in this context encapsulates everything that moves through the Mule application. Specifically, an event consists of three primary components: the payload, attributes, and metadata. The payload holds the actual data being processed, while attributes include contextual information about the event, such as headers and properties. This comprehensive definition enables Mule applications to handle data in a structured manner, facilitating transformations, routing, and other operations efficiently.

The terminology is important within the context of MuleSoft, as it reflects the foundational design of the platform, focusing on event-driven architecture. Understanding that messages are termed events helps clarify how data flows within Mule applications and how various components of the framework interact with these events.

The other terms are not used to describe messages in this context. While "payloads" refers specifically to the data content of an event, "records" typically pertain to structured data within a database or a data structure. "Notifications" are generally associated with alerting systems rather than the fundamental message structure in MuleSoft. This clarity on terminology is essential for working effectively within the MuleSoft environment.