Event-driven Architecture (EDA) is a software architecture paradigm promoting the production and consumption of events. An event represents an action of significant interest. Often, events correspond to a creation or a change of state of some entity. For example, raising an order in an e-commerce application is an event. Dispatching a product as a result of an earlier
Instead of storing just the current state of the data in a domain, use an append-only store to record the full series of actions taken on that data. The store acts as the system of record and can be used to materialize the domain objects. This can simplify tasks in complex domains, by avoiding the
n a previous post on microservices integration patterns, we talked briefly about messaging. Messaging comes with many options and patterns, and one of the most critical decisions you’ll make is choosing between message brokers. RabbitMQ and Kafka are lead options, seen as representing queueing and streaming, respectively. If you Google “Kafka vs RabbitMQ, you are unlikely
When the world wide web first emerged, integrating different types of operating systems was a core challenge. Hypertext transfer protocol (HTTP) created communication channels by sharing hypertext, these systems started speaking a common language over an accepted protocol, and the internet as we know today was born. When creating a microservices architecture, the integration challenges
Out of the many advantages of microservices, the most significant motivations are scale and autonomy for business units. These go hand in hand. However, we still need to create an integrated experience that makes sense for the end user. It’s important to keep both these aims in mind when developing strategies for the interactions between