GitOps with ArgoCD and Hashicorp Vault on kubernetes

Last month I was picking my brain about GitOps and how this model fits with other kubernetes technologies like operators and backups. I decided to give it a try with ArgoCD. I created a private repo on GitHub, and started to set up everything. Suddenly, a thought came into my mind: I cannot store sensible information in a GitHub repo even if it is private and for testing purposes. So I started to dig into the alternatives using the links in the documentation.

Trying DB2 in Kubernetes for developers

Recently I have been asked a lot of similar questions like “does it make sense to invest in deploying legacy technology on kubernetes?". Well, first of all, I have to say that some technologies that are considered “legacy” have tons of new exciting features for the new workloads and applications. This is, for example, the case of DB2 with spatial queries and many others that you may have a look at (to be honest, I have very few experience with it).

Spring Boot embedded cache with Infinispan in Kubernetes

Spring Boot is extensively used for microservice architectures, most of them running in kubernetes. Spring Cache has been defined as an abstraction layer for cache servers, although there are other alternatives (JSR-107 JCache was one of the initial ones). When using a cache, there are two alternatives, embedded in the microservice or external to it. Both has its benefits and drawbacks and depending on the use case one is prefered