Advantages of Event Driven Architecture

The Event-Driven Architecture pattern is not new. The concept first originated in 2000 which was just prior to the dawn of what can be considered the age of interactivity and interoperability.

Event-Driven Architecture (EDA) departs from the traditional request-driven software architecture in which someone had to take an action specifically designed to obtain a desired outcome from the system to an event-driven environment in which the fact that something happened, an event, causes appropriate responses to be returned by the system.

The Top 4 Benefits of Event-Driven Architecture



1. You Use EDA Regularly When You Use GPS

To define through illustration, imagine you’re driving on a highway. Suddenly, your GPS system alerts that it is re-routing. It does so because something happened, an event occurred. In this case, the event was a traffic accident ahead of you on the road you’re driving on. The result of that event has already started becoming backed-up heavy traffic that will delay you if you remain on this road. Instead, your GPS recommends that you switch to a parallel route. It even chooses that route for you and directs you as to how to get there.

That entire process began with a careless driver not looking or signaling before they changed lanes. An event that otherwise had no relation to you, nor was it aware of you. It just happened. Neither was the traffic monitoring system that detected the accident and reported it to your GPS guidance system aware of you. And you weren’t really aware of any of these systems either, at least until now.

You made no request to be shown traffic patterns on the various area highways. In fact, you made no requests at all.

All the systems involved, including you, your GPS, the guidance system, and the traffic monitoring system are very loosely coupled to each other. Barely at all. They all quickly coupled when the event was detected so it could be routed and processed to notify you to get to another route. The traffic monitoring system also coupled with many other systems to provide the same notification.

This is the greatest benefit of EDA. It scales easily providing highly responsive reactions to all manner of applications and providing access to needed data in real-time to fuel fast, effective decision-making.

2. The Importance of Interoperability

The successful operation of the Internet of Things (IoT) is clearly heavily dependent upon frictionless interoperability. EDA enables highly divergent, loosely-coupled systems to detect events happening in other systems that require a response. This, in turn, enables a new level of automation that is highly responsive delivering substantial efficiency increases in delivering the right information to the right systems and people, making fully-informed decisions, and taking decisive action faster than ever before.

The loosely-coupled nature of event-driven architecture systems also facilitates rapid access to large and varied volumes of data generated by IoT devices and stored across various connected networks. Without the traditional overhead of integrated data access systems, more information, and more robust information, is available faster and to more endpoints than was possible otherwise.

Resilience and fault-tolerance are also enhanced by the underlying nature of the loosely-coupled computing nodes that constitute event-driven environments. Should a node fail while processing a particular event, that failure becomes an event that is detected immediately triggering the re-instantiation of that node to complete the required functions. Since event-driven architecture systems also record every activity it is possible for them to recover from failure by replaying recent events to re-establish conditions at an earlier point in time.

3. Event-Driven Architecture Enables Asynchronous Functionality

The other fundamental characteristic of Event-Driven Architecture that is so tremendously valuable is that all functions are completely asynchronous which completely discards the linear nature of traditional software design. No longer are developers bound by a highly specific code that pre-determines every action. Instead, the occurrence of an event determines what actions will be taken next. While this may be harder for developers to document, it provides unheralded flexibility and openness in system design.

Also, since EDA systems are self-documenting they are also naturally optimized for use in real-time analytics. Incorporating artificial intelligence (AI) and machine learning (ML) technologies will evolve this into self-healing, self-improving performance.

4. Living in an Everything-On-Demand World

Perhaps the most confounding challenge in using EDA is the difficulty in providing root cause analysis of any given failure. As event producers and event consumers proliferate it becomes more and more difficult to trace back activities occurring within and between them. Like an interstate automobile pursuit, the most difficult transition occurs when the getaway vehicle reaches and crosses over the border where the chase must then transition between the first state’s law enforcement vehicles and the second. This is an ideal place for the getaway car to getaway.


We certainly hope you’ll include Tiempo Development in your search for a capable partner to work with on your EDA project. Knowledge transfer and earning our reputation for excellence are our highest priorities. Contact us today to learn how we can help.


Event-Driven Architecture eBook CTA