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The Microservices and DevOps Journey at Wix

Updated: Jun 18, 2018

We at started our journey on DevOps and Microservices about two years ago and recently switched from a monolithic application to a microservices-based application. Yes, it took us a full two years to complete the transition from monolith to microservices!

Arun Gupta (@arungupta) got connected with Aviran Mordo (@aviranm), head of backend engineering here at Wix, through twitter:

We migrated to microservices because the “system could not scale” and the requirements for functional components were varied. The journey took our WAR-based deployment on Tomcat to fat JAR with embedded Jetty. On a side note, take a look at WildFly Swarm if you are interested in a similar approach for Java EE applications.

Arun Gupta discussed some points with Aviran about this journey and you can watch the same below.

In this discussion, you’ll learn:

  • Why Continuous Delivery and DevOps are important requirements for microservices?

  • How we migrated from a big monolith to smaller monoliths and then a full-blown microservices architecture

  • How database referential integrity constraints were moved from database to application?

  • “micro” in microservices refers to the area of responsibility, nothing to do with LOC

  • Neither REST nor messaging was used for communication between different services. Which protocol was used? JSON-RPC

  • How do services register and discover each other? Is that required during early phases?

  • Why YAGNI and KISS are important?

  • Chef for configuration management and how to make it accessible for massive deployments

  • TeamCity for CI

  • Is 100% automation a requirement? Can 100% automation be achieved? Learn about Petri, Wix’s open source framework for A/B testing

  • Relevance of hybrid cloud (Google, Amazon, Private data center) and redundancy

  • Hardest part of migrating from monolith to microservice

  • How much code was repurposed during refactoring?

  • Where was the most effort spent during the two years of migration?

  • Distributed transactions

  • What was the biggest challenge in DevOps journey?

Look out for a nice story towards the end that could be motivating for your team as well 😉

Watch the slides from DevoxxUK: Scaling wix with microservices architecture devoxx London 2015 By Aviran Mordo. You can also learn more about our architecture in Scaling Wix to 60m Users. Enjoy!

Here is a link to the Original Post, by Arun Gupta, as posted on Voxxed.


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