Book Image

Architectural Patterns

By : Anupama Murali, Harihara Subramanian J, Pethuru Raj Chelliah
Book Image

Architectural Patterns

By: Anupama Murali, Harihara Subramanian J, Pethuru Raj Chelliah

Overview of this book

Enterprise Architecture (EA) is typically an aggregate of the business, application, data, and infrastructure architectures of any forward-looking enterprise. Due to constant changes and rising complexities in the business and technology landscapes, producing sophisticated architectures is on the rise. Architectural patterns are gaining a lot of attention these days. The book is divided in three modules. You'll learn about the patterns associated with object-oriented, component-based, client-server, and cloud architectures. The second module covers Enterprise Application Integration (EAI) patterns and how they are architected using various tools and patterns. You will come across patterns for Service-Oriented Architecture (SOA), Event-Driven Architecture (EDA), Resource-Oriented Architecture (ROA), big data analytics architecture, and Microservices Architecture (MSA). The final module talks about advanced topics such as Docker containers, high performance, and reliable application architectures. The key takeaways include understanding what architectures are, why they're used, and how and where architecture, design, and integration patterns are being leveraged to build better and bigger systems.
Table of Contents (13 chapters)

EDA pattern implementation in systems/processes

In this section, we will discuss the implementation of event-driven patterns in processes. The main components that are involved in this implementation are the following:

  • Event queue
  • Event log
  • Event collectors
  • Reply queue
  • Read versus write events

Each of these components and the overall functioning of this architecture will be explained in this section. The core component for this implementation is a central event queue. All events are inserted into a central event queue before they are processed. The following diagram depicts this queue-based architecture:

Events are placed in an order when they are inserted into the queue so that it is possible to track the sequence in which the system responds to events.

Event log

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