42 posts tagged with "Containers"

Your deployment has 5 pods running happily. But pods die and get replaced constantly — each time with a new IP address. So how does your frontend talk to your backend if the backend's IP keeps changing? The answer is Services, and getting them right is the difference between a working cluster and a networking nightmare.

You spin up a Postgres container, create tables, load data, and everything works. Then you run docker rm and all your data vanishes. This is not a bug — it is by design. Containers are ephemeral. But your data should not be.

You ran docker build and it finished in 0.2 seconds. Then you changed one line of code and suddenly it takes 4 minutes. What happened? The answer lies in how Docker images are built — layer by layer — and understanding this will save you hours of wasted build time.

You created your first pod, it ran nginx, and you felt like a Kubernetes wizard. But then production happened — your app needed a config file fetched before startup, logs shipped to a central collector, and a graceful shutdown that did not drop in-flight requests. Welcome to the real world of Kubernetes pods.

Docker has revolutionized how we build, ship, and run applications. This practical guide will get you started with Docker containers and help you understand why they're essential for modern development.

Kubernetes (K8s) is an open-source container orchestration platform that automates deployment, scaling, and management of containerized applications.