Categories
AWS

ENABLE CORS ON AN ELASTIC LOAD BALANCER

A couple of weeks ago we needed to consume from a ReactJS frontend some REST services hosted on some EC2 instances, standing behind an Elastic load balancer. As you may know, if both the frontend application and the services are not served on the same host (in our case the ReactJS frontend was on a […]

Categories
AWS DevOps

MYSQL MULTI-MASTER REPLICATION ON AMAZON RDS

One great feature of modern relational databases is the ability to replicate changes automatically from one database server to another. This has many use cases, from having a backup that is ready to jump as a production server, to having a fresh copy of your data out of the online database for heavy load queries. In a project for ANII, […]