About Microservices.io

Microservices.io is brought to you by Chris Richardson. Experienced software architect, author of POJOs in Action and the creator of the original CloudFoundry.com. His latest startup is eventuate.io, a microservices application platform.

Learn more about microservices

Chris offers a comprehensive set of resources for learning about microservices including articles, an O'Reilly training video, and example code. Learn more

Microservices consulting and training

Chris offers a comprehensive consulting services, workshops and hands on training classes to help you use microservices effectively. Get advice

Need training in London?

I'll be there in May!

Contact me

Example microservices applications

Want to see an example? Check out Chris Richardson's example applications. See code

Get the book: Microservice patternsnew


Signup for the newsletter

A new microservices application platform that solves distributed data management problems.

Join the microservices google group

Pattern: Publish events using database triggers

Context

You have applied the Event-driven architecture pattern. In order to be reliable, services must atomically publish events whenever their state changes. It is not viable to use a distributed transaction that spans the database and the message broker.

Problem

How to reliably/atomically publish events whenever state changes?

Forces

  • 2PC is not an option

Solution

One or more database triggers insert events into an EVENTS table, which is polled by a separate process that publishes the events.


Copyright © 2017 Chris Richardson • All rights reserved • Supported by Kong.