<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>Iresh Ekanayaka</title><description>DevOps &amp; SRE Engineer passionate about Linux and cloud technologies. Sharing real-world experiences in infrastructure automation, monitoring, and building reliable systems.</description><link>https://iresh.xyz/</link><item><title>Nix Flakes and direnv - Reproducible Dev Environments That Actually Work</title><link>https://iresh.xyz/posts/2026/nix-flakes-reproducible-dev-environments/</link><guid isPermaLink="true">https://iresh.xyz/posts/2026/nix-flakes-reproducible-dev-environments/</guid><description>A practical guide to setting up Nix Flakes and direnv on WSL/Ubuntu. How to make your development tools consistent across your laptop, your team, and your CI pipeline.</description><pubDate>Fri, 06 Mar 2026 00:00:00 GMT</pubDate></item><item><title>Understanding Modern Cryptographic Keys: A Practical Guide for Learners</title><link>https://iresh.xyz/posts/2026/understanding-modern-cryptographic-keys/</link><guid isPermaLink="true">https://iresh.xyz/posts/2026/understanding-modern-cryptographic-keys/</guid><description>A clear, practical guide to understanding SSH keys, X.509 certificates, and modern cryptography. Learn how RSA, Ed25519, ECDSA, TLS, and HTTPS work in real IT systems.</description><pubDate>Sat, 21 Feb 2026 10:00:00 GMT</pubDate></item><item><title>Don&apos;t Win One Side of Life and Lose the Rest</title><link>https://iresh.xyz/posts/2026/dont-win-one-side-of-life/</link><guid isPermaLink="true">https://iresh.xyz/posts/2026/dont-win-one-side-of-life/</guid><description>Life isn&apos;t about choosing extremes. Learn how to build sustainable success across career, relationships, health, and happiness without sacrificing what truly matters.</description><pubDate>Fri, 20 Feb 2026 00:00:00 GMT</pubDate></item><item><title>Mutating vs Validating Webhooks in Kubernetes</title><link>https://iresh.xyz/posts/2026/mutating-vs-validating-webhooks-kubernetes/</link><guid isPermaLink="true">https://iresh.xyz/posts/2026/mutating-vs-validating-webhooks-kubernetes/</guid><description>Understanding admission controllers in Kubernetes - the policy enforcement gates that validate and modify resources before they reach your cluster.</description><pubDate>Tue, 17 Feb 2026 23:00:00 GMT</pubDate></item><item><title>Enterprise Monitoring &amp; Observability: A Modern Architecture Blueprint for Large-Scale Organizations</title><link>https://iresh.xyz/posts/2026/enterprise-monitoring-observability-modern-architecture/</link><guid isPermaLink="true">https://iresh.xyz/posts/2026/enterprise-monitoring-observability-modern-architecture/</guid><description>A comprehensive guide to building modern monitoring and observability architecture used by large-scale organizations worldwide. Learn about telemetry standardization, infrastructure monitoring, APM, AIOps, and reliability engineering.</description><pubDate>Thu, 15 Jan 2026 00:00:00 GMT</pubDate></item></channel></rss>