Expert guides on cybersecurity, cloud infrastructure, DevOps, AI, email systems, and modern technology — written by engineers, for engineers.
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Step-by-step guide to deploy OpenVPN on Windows Server using our open-source PowerShell script. Install, configure, manage clients, NAT, and monitor — all from one menu-driven tool.
Redis is far more than a cache. It is an in-memory data structure server that can serve as a cache, message broker, queue, session store, rate limiter, leaderboard, and real-time analytics engine. This comprehensive guide covers every Redis data structure, caching patterns, Pub/Sub messaging, Streams for event sourcing, Lua scripting, Redis Cluster for horizontal scaling, persistence strategies, and production operational best practices.
You have a SaaS idea, but turning it into a launched product is overwhelming. This comprehensive guide covers the entire journey from validating your idea through building the MVP, choosing the right tech stack, implementing authentication and billing, designing multi-tenant architecture, deploying to production, and preparing for scale. Practical advice from real-world experience.
DNS is the invisible infrastructure that makes the internet work. Every website visit, every API call, every email delivery starts with a DNS query. Yet most developers barely understand how DNS works, let alone how to secure it. This exhaustive guide covers DNS resolution, record types, DNSSEC, DNS-over-HTTPS, DNS-over-TLS, split-horizon DNS, DNS-based load balancing, failover strategies, and common misconfigurations.
Python is often dismissed as "too slow" for high-performance backends. This is wrong. With proper optimization, Python backends handle millions of requests per day. This in-depth guide covers profiling, database query optimization, async/await patterns, caching strategies with Redis, connection pooling, serialization performance, memory optimization, Gunicorn/Uvicorn tuning, and scaling strategies.
Why pay monthly SaaS fees when you can run the same (or better) services on your own hardware? This comprehensive guide covers self-hosting everything from email and file storage to Git repositories, project management, analytics, and monitoring. Learn about hardware selection, Docker Compose configurations, reverse proxy setup with Nginx, SSL certificates, backup strategies, and maintaining uptime.
Data privacy regulations are becoming stricter and more widespread. GDPR, CCPA, LGPD, and India's DPDPA create a complex web of requirements for any application that handles personal data. This technical guide covers privacy-by-design architecture, data classification, consent management, right-to-erasure implementation, data minimization, pseudonymization, encryption strategies, breach notification workflows, and audit logging.
A well-designed CI/CD pipeline is the backbone of modern software delivery. This comprehensive guide covers pipeline architecture patterns — from simple linear pipelines to complex multi-stage workflows with parallel testing, canary deployments, blue-green strategies, GitOps, security scanning, and infrastructure-as-code integration. Learn how to build pipelines that are fast, reliable, and secure.
A default Linux server installation is a playground for attackers. SSH with password auth, no firewall, unpatched packages, and services running as root. This exhaustive guide covers every hardening step from initial setup through ongoing maintenance — SSH configuration, firewall rules, user management, kernel hardening, file integrity monitoring, audit logging, automatic updates, and intrusion detection.
HTTP is request-response. WebSockets are bidirectional, persistent, and real-time. This comprehensive guide covers WebSocket architecture, connection lifecycle, authentication, horizontal scaling with Redis pub/sub, heartbeats, reconnection strategies, and production deployment patterns for chat, notifications, live dashboards, and collaborative editing.
Containers are not sandboxes. A misconfigured Docker container gives attackers the same access as a root shell on the host. This comprehensive guide covers image security, build hardening, runtime protection, secrets management, network isolation, and monitoring — everything you need to run Docker securely in production.
Every engineering team has technical debt. The question isn't whether you have it — it's whether you're managing it strategically or letting it compound until it crushes your velocity. This guide covers identification, prioritization, and systematic reduction.
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