Documentation
Technical guides on DevOps, infrastructure, and tooling
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Microservices from Zero: Architectures, Trade-offs, and Migration
Technical path from architecture foundations to Domain-Driven Design boundaries, sagas/outbox, design anti-patterns, and a full transactional commerce design with a phased first-cut plan.
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Container & Orchestration Decision Guide
Compose, Swarm, Kubernetes, Nomad, PaaS, managed containers — or no containers. Ranked recommendation from practical questions.
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Varnish Cache + WordPress/WooCommerce on Docker: Beginner to Production
Add Varnish 7.x to Nginx/PHP-FPM/MariaDB without moving TLS — WooCommerce-safe VCL, purge/ban, grace, testing, and full Compose configs.
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MariaDB Performance Tuning for Production: Memory, InnoDB, I/O, Docker
Complete DevOps guide — buffer pool, redo log, connections, formulas, and production my.cnf.
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HashiCorp Vault + Laravel: Layers, Methodologies, and Parameters
End-to-end bootstrap, split-server topology, KV layout for multi-Redis, secret migration, Vault Agent + Octane, startup order, backup drill, AppRole production bootstrap.
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Scale Out MariaDB from Docker: Replication, ProxySQL, MaxScale, Galera & Keepalived
From one container to production scale-out — async replicas, multi-host networking, ProxySQL, MaxScale, Galera, Keepalived VIP, and failover playbooks.
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Docker Network MTU Tuning: Defaults, Diagnosis, and Production Configuration
Bridge MTU, VPN scenarios, MSS formulas, and fixing slow TLS and mystery timeouts.
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Docker Logging Driver Tuning: Defaults, Formulas, and Disk-Safe Configuration
Rotation formulas, daemon.json, shipping to Loki/ELK/Fluent Bit, and step-by-step production setup.
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iptables on Docker Hosts: Complete Firewall Guide from Zero to Production
Remove UFW, understand tables and chains, DOCKER-USER, production rules, and iptables-persistent.
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Nginx on Docker: Complete Guide with Defaults, Formulas, and Real Calculations
From zero to production — every directive explained with defaults, formulas, and step-by-step calculations.
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How to Enable Two-Factor Authentication for SSH
TOTP with libpam-google-authenticator — SSH key + 2FA, PAM/sshd config, safe rollout, and troubleshooting.