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Codelooru takes one thing at a time and takes it apart.
Explained
One concept, taken apart properly.
- Explained: NATStart here
- Explained: CoreDNSKubernetes
- Explained: Bloom FiltersData
Architecture
Complete systems, end to end.
- Architecture: KubernetesFull guide
- Architecture: KafkaStreaming
- Architecture: MainframeSeries
In Focus
Current tech, no hype.
Recent posts
September 29, 2026
Under the Hood: Kubernetes QoS Classes
It is 3 a.m. and a node in your production cluster runs low on memory. When the dust settles, your payment service has been killed and restarted twice. The nightly batch job on the same node, the one nobody would miss for an hour, sailed through untouched. Nothing in the dashboards says why, and nobody made that choice on purpose. Except somebody did. Months earlier, someone wrote requests and limits into two manifests. The batch job got requests… Read More
by Phee Jay
September 29, 2026
Explained: AWS Fargate
You have a container. It runs on your laptop with a single docker run , it passes its tests, and it is ready for production. Then you open the AWS console to deploy it and the questions start. Which EC2 instance type? How many of them? Which AMI? Who patches the operating system next month? What happens when the cluster runs out of room at 2 a.m.? None of those questions are about your application. They are about the machines your application happ… Read More
by Phee Jay
September 29, 2026
Explained: Model Context Protocol (MCP)
You open your editor and ask the AI assistant why last night's build failed. A few seconds later it has pulled the CI logs, found the failing test, opened the commit that broke it, and checked whether anyone already filed a ticket. You never pasted a single log line into the chat. Not long ago, that kind of reach had to be built by hand. Someone wrote code that taught this particular assistant to talk to this particular CI system, then did it… Read More
by Phee Jay
September 29, 2026
Explained: Machine Payments Protocol
You find an API that does exactly what you need. You only want to make a handful of calls to see if it works. Before the first request goes out, you are creating an account, confirming your email, entering a credit card, choosing a pricing tier and copying an API key into an environment variable. Ten minutes of paperwork for a few cents of usage. Now picture an AI agent in the same position. It is halfway through a research task and hits a paid d… Read More
by Phee Jay