# Denat's Newsletter A newsletter about microservices, JS, and engineering things I wish I knew 2 years ago. Page: Feed: --- ## [Managing Version Dependencies Between Microservices](https://denat.substack.com/p/managing-version-dependencies-between) _2023-10-02 · Denat Hoxha_ If deploying a new version of a microservice requires deploying new versions of other services at the same time, you’re probably doing something wrong. ## [Building Resilient Applications with AWS Spot Instances and EKS](https://denat.substack.com/p/building-resilient-applications-aws-ec2-spot-eks) _2023-09-24 · Denat Hoxha_ Spot instances are amazing at saving you money on your AWS bill, but you'll have to put in the work to reap the benefits and keep your apps resilient. This post will discuss some tips and limitations.