How Prometheus decides when a time series becomes stale, when stale markers are written, and how they interact with the 5-minute lookback window.

A deep dive into HashiCorp Consul, exploring its architecture, how it implements a service mesh with Envoy, and detailed component workflows.

A comprehensive look at the architecture, components, and production use cases of the Calico CNI.

Buffer vs Cache in Linux — what each really caches, how free and /proc/meminfo define them, and how to verify

binary heap: structure, operations, and applications

Understanding LLM fundamentals — tokenization, embedding, attention, and text generation with concrete examples

Anycast + BGP Overview

How to add client-side fuzzy search to a Hugo blog using Fuse.js

Understanding the 7-layer OSI model with a concrete example: a message from a phone over WiFi to a wired PC

A comprehensive overview of HTTP protocol evolution — from the one-line HTTP/0.9 to HTTP/3 over QUIC