SOA Made Simple

Events

The previous chapter introduced events as a mechanism to signal that something noteworthy happened. Events are important in an SOA platform, thus:

• From a business point of view, events are a natural way to represent information. Businesses and their surrounding ecosystem of suppliers, partners, and clients cause and react with events continuously: a customer moving to a different address, a new purchase order, receiving an invoice from a supplier, sending a bill to a partner, and so on.
• From a technical point of view, events improve the decoupling between software components. Software components are not required to know of each other’s existence any more.

An event contains a payload that provides information on the occurrence. The following ...