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How to get started with event-driven microservices

Sometimes businesses reach a point in their development where the monolithic apps that formerly served them well begin to hamper them. Perhaps the company needs additional features that the old architecture cannot provide or more flexible methods of storing and accessing data for its apps. A single, monolithic codebase can be threatened by team expansion, competitive performance requirements, and rising competitor’s technologies. You can overcome these difficulties by using an event-driven microservices design.

Basics of Microservices

Microservices disintegrate monolithic systems into smaller, purpose-built services that may be customized for the particular problem or opportunity at hand. They provide you with the liberty to employ whatever programming languages, frameworks, and databases you like. Microservices can design, administer, and store data based on their requirements, giving you maximum freedom over how to handle your business challenges.

Microservices’s role in event-driven architecture

Systems communicate in an event-driven microservices architecture by creating and receiving events. These event-driven services ingest events via input event streams and use business logic to produce their output events, supply data for request-response access, talk with a third-party API, or perform other needed operations.

Advantages of leveraging event-driven architecture

1. Decoupling event sources and targets

Decoupled architectures, which are made up of flexible components or services, provide more flexibility in app development. These designs broadcast events without needing a response, providing scalable, highly customizable systems. Decoupled apps also allow teams to work more autonomously, enhancing velocity. This removes the requirement for authentication and team cooperation, reducing development time. Moreover, event-driven architectures make it easier to add new features or extensions since users simply need to select the event that will trigger their new feature and subscribe to it, rather than changing current services.

2. Generate fewer codes

When you create apps employing event-driven architecture, you frequently write less code since you simply need to consider new events and which services are subscribed to those events. For example, if you’re developing new app features, all you need to do is analyze current affairs and afterwards add senders and receivers as required. This reduces development time since each functional unit is smaller and has fewer codes.

3. Improved adaptability

For example, you created a very expandable app. Other teams can add features and functionality without affecting other microservices. This app interfaces with current systems by broadcasting events using EventBridge, but it also permits any potential app to connect as an event consumer. Event producers are unaware of event consumers, which helps simplify the microservice architecture.

4. Improving Team Performance

Event-driven architecture is a popular technique for designing apps in which product managers and stakeholders collect requirements and transform them into code. This method assists businesses in understanding the concept and provides events that interested teams may subscribe to. Businesses can successfully define and express their difficulties using this method. By specifying events in an app, teams can take action on important events, creating a smooth and productive application development process.

Use a catalog to keep track of event streams and services

Catalogs are used to create microservices and event streams for use management and metadata tracking.

1. Determining who owns an event stream, which data it includes, and what format and structure it employs.

2. Learning about existing microservices, who owns them, and what event streams (and APIs) they are in charge of.

When first starting, you may catalog information using something as basic as a shared spreadsheet. Once your company expands, you’ll need to switch to a specialized metadata service.

Build an authorized tool set of tools, languages, and architectures

Event-driven microservices offer a wide range of technologies, including programming languages, frameworks, databases, and apps. Developers, on the other hand, can use too many technologies, resulting in increased expense, complication, and management waste. To overcome this, stakeholders should come to an understanding of a toolbox of technologies to support while avoiding excessive assistance. If developers want to go beyond the toolkit, they need to have a compelling reason, such as their own experience. The goal should be to make designing and maintaining microservices as simple as possible for developers.


Event-driven communication is critical for modern businesses with different data sets. Event-driven microservices provide a customizable solution by employing event streams as a credible source of truth for other services. Lastly, cloud services reduce platform management time.