Part 7 – Health Probes
Why a Running Spring Boot Application Doesn't Always Mean It's Ready Sarah watches the deployment dashboard. Everything appears normal. NAME READY STATUS RESTARTS AGE payment-service-84bd67f6df-j9dkt 1/1 Running 0 18s The…
Part 6 – The kubelet
How Kubernetes Brings Your Spring Boot Application to Life In the previous article, we left our Payment Service in an interesting state. The Scheduler had successfully completed its work. After…
Part 5 – The Kubernetes Scheduler
How Kubernetes Chooses the Perfect Node for Your Spring Boot Application In the previous article, we followed Sarah's deployment from the moment she executed kubectl apply until the Deployment Controller…
The API Server – The Front Door of Kubernetes
Imagine arriving at a large international airport. Regardless of whether you're a passenger, an airline employee, airport staff, or a delivery partner, everyone enters through a controlled checkpoint. Your identity…
The API Server – The Front Door of Kubernetes
Imagine arriving at a large international airport. Regardless of whether you're a passenger, an airline employee, airport staff, or a delivery partner, everyone enters through a controlled checkpoint. Your identity…
Part 4 – From kubectl apply to a Running Spring Boot Application
What Really Happens Behind the Scenes? "The most powerful thing about Kubernetes isn't that it runs containers. It's that it continuously works to make reality match your desired state." Friday…
Building Self-Healing Java Microservices with Kubernetes, OpenShift & Service Mesh
The Complete Learning Roadmap Modern enterprise applications are no longer just Spring Boot applications running on a server. They are distributed systems deployed across Kubernetes clusters, communicating through REST APIs…
Bonus: How Do Java Threads, CompletableFuture and CPU Cores Really Work?
One question comes up almost every time developers start deploying Java applications on Kubernetes. "If my application uses CompletableFuture to upload five files in parallel, do I need five CPU…
Part 3 – Kubernetes Workloads and Infrastructure Sizing for Java Microservices
"The first time I deployed a Spring Boot application to Kubernetes, the platform team didn't ask for my JAR file. Instead, they asked me a dozen questions that I had…
Part 2 – Understanding Kubernetes Architecture
"Before Kubernetes can heal your application, it must first understand what your application should look like." Introduction In the previous article, we discussed why failures are inevitable in distributed systems…