AWS ELB: Zero downtime or Blue Green or Canary deployments!

In this post (https://zoumana.wordpress.com/2014/06/16/zero-downtime-deploiement-sur-tomcat7/), i talked about the Zero Downtime deployment feature inside tomcat 7 and later.

To summary this was about deploying a newer version of the same app within the same tomcat container keeping the previous WAR serving the HTTP requests until the new version is successfully deployed to take over the next users’ requests.

Today the target is the same:  avoiding to take an application off-line during an upgrade for the happiness of end users 🙂 but through one of Amazon Web Services feature: Elastic Load Balancer! Lire la suite

Zero Downtime déploiement sur Tomcat7

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Une fonctionnalité sympa du serveur d’application / conteneur léger JEE Tomcat7 permet de migrer une application donnée de versions sans interruption de service du point de vue utilisateur.

Pourquoi est-ce si génial?

Lire la suite