Blogs

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Why AxonIQ Cloud?

By Sara Torrey

February 22, 2022

2 min

AxonIQ Cloud Axon Server - part of the Axon Platform is our zero-configuration, purpose-built Event Store and Message Bus. AxonIQ Cloud delivers Axon Server as a hosted service and abstracts away set...

Sagas in practice

By Yvonne Ceelie

June 18, 2021

5 min

This blog is a how-to implement a Saga with Axon and Spring Boot. Saga’s are a powerful concept but, you need to think about other options before implementing a Saga. You’ll have to keep in mind that...

Protect sensitive data in an event-sourced application

By Yvonne Ceelie

February 24, 2021

7 min

In message-driven systems, messages flow in many directions. This behavior helps to decouple applications to make these systems better scalable. When it comes to sensitive data, we need to know who...

From model to code - zoom out

By Ivan Dugalic

December 14, 2020

4 min

In the previous blog post, Ivan focused on translating the "music lesson booking system" event model to the source code using Axon Framework, a programming model, and Axon Server as an event store...

Split & merge fundamentals

By Sara Pellegrini

November 26, 2020

5 min

Nowadays, systems must be designed to handle loads that change quickly and dynamically. In these situations, it is expected that our applications adapt accordingly. For example, Axon applications...

From Model to Code - Translating the (Event) Model into Code

By Ivan Dugalic

November 24, 2020

4 min

In the previous blog post, we (well, mostly Sara Torrey) have discussed Event modeling and how it can be used as a tool to create a blueprint for your solution.

Set Based Consistency Validation

By Yvonne Ceelie

November 11, 2020

6 min

Requests like “How do I ensure the email address in a User aggregate is unique?” or “How do I ensure usernames are only used once on command handling?” reach us quite often. We can rephrase them: How...

From Model to Code: Event Modeling & Axon Framework

By Sara Torrey

October 27, 2020

5 min

How do I design an application? What’s the process like? Where do I even begin?! Well, the ‘old me’ would design an application "on the fly," AKA, create a repository on GitHub, open it on IntelliJ,...

High Availability with Axon Server and Axon Framework

By Bert Laverman

September 25, 2020

12 min

Key takeaways High Availability concerns the “art” of making a system deal with local failures in a way that enables it to limit the impact of the losses and prevent businesses and users from being...

5 key benefits of migrating to Axon 4

By Steven van Beelen

February 19, 2020

7 min

In Axon's 10 year history (you’ve read that right, it turned 10 in January 2020!) we have striven to take all received feedback to keep improving the look and feel. Not only usability for developers...

Bounded contexts with Axon

By Ivan Dugalic

April 25, 2019

4 min

"A Context is the setting in which a word or statement appears, and that determines its meaning".

CQRS replay performance tuning

By Frans van Buul

January 19, 2019

5 min

Command Query Responsibility Separation (CQRS) has become a popular pattern to avoid complex, and therefore slow, database queries in applications. With CQRS, queries are served from dedicated read...

Parameter Resolvers in Axon

By Milan Savic

December 20, 2018

3 min

Axon is an open-source Java framework for building systems in CQRS (Command Query Responsibility Separation), DDD (Domain Driven Design), and Event Sourcing. Axon provides a high level of location...

Some CQRS and Event Sourcing pitfalls

By Frans van Buul

December 10, 2018

5 min

In one of our recent blogs, we talked about constructing a real-life Axon application. Which areas should you distinguish on a high level, and what code should go where? This is a question often...

Demystifying tracking event processors in Axon Framework

By Milan Savic

November 27, 2018

4 min

Axon is a popular framework for writing Java applications following DDD, event sourcing, and CQRS principles. While especially useful in a microservices context, Axon provides great value in building...

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