Challenges of EDA
Explore the common challenges encountered when adopting event-driven architecture such as dealing with eventual consistency, managing dual writes, handling distributed asynchronous workflows, addressing user experience concerns, ensuring component collaboration through choreography or orchestration, and improving traceability. Understand these issues to better plan and implement event-driven solutions.
Adopting EDA patterns for our application brings along some challenges that must be overcome for the application to succeed.
Eventual consistency
Eventual consistency is a challenge for any distributed application. Changes in the application state may not be immediately available. Queries may produce stale results until the change has been fully recorded. An asynchronous application might have to deal with eventual consistency issues, but without a doubt, an event-driven application certainly will.
Dual writes
Not entirely a challenge of event-driven applications alone, dual write refers to any time we’re changing the application state in two or more places during an operation. For an event-driven application, this means we are making a change locally to a database, and then we’re publishing an event either about the event or the event itself. If ...