Articles & Guides
Useful resources for web developers and system administrators
HTTP
HTTP Request Lifecycle: DNS, TCP, TLS, Request, Response
The HTTP request lifecycle step by step: URL parsing, DNS lookup, TCP connect, TLS handshake, request, server processing and response, and what fails.
Networking
IPv4 vs IPv6: Differences, Migration and What It Means
Understand the differences between IPv4 and IPv6, why the transition matters, dual-stack configuration, and how to prepare your web infrastructure.
Monitoring
MTTR, MTTF, MTBF: Reliability Metrics for Web Operations
Understand key reliability metrics — MTTR, MTTF, MTBF — and how to use them to measure and improve your web service availability.
SEO
robots.txt Guide: Syntax, Rules, Testing and Ready-Made Files
A complete robots.txt guide: RFC 9309 syntax, user-agent groups, Allow precedence, blocking a site from crawling, plus ready files for WordPress, Tilda and Bitrix.
DevOps
Docker Container Monitoring: Metrics and Tools
Learn how to monitor Docker containers effectively: key metrics, tools like Prometheus and cAdvisor, alerting strategies, and production best practices.
Performance
Gzip vs Brotli: Web Compression Compared
Compare Gzip and Brotli compression for web performance. Learn configuration, browser support, compression ratios, and when to use each.
HTTP
Server-Sent Events vs WebSockets: Which to Use for Realtime
Compare SSE and WebSockets for real-time web communication. Learn when to use each, their performance characteristics, and implementation patterns.
Security
WAF Rules: Writing Effective Web Application Firewall Policies
Learn how to write effective WAF rules, understand rule types, avoid false positives, and protect your web application from common attacks.
DNS
DNS Failover: Automatic Traffic Switching on Outage
Learn how DNS failover works, how to configure automatic traffic switching, and best practices for achieving high availability with DNS.
Monitoring
Incident Response Plan: A Step-by-Step Guide for Web Teams
Build an effective incident response plan for web teams. Learn the phases, roles, communication templates, and post-incident review process.