Overview

PostgreSQL has become the backbone of modern data platforms-powering transactional systems, analytics engines, SaaS applications, financial systems, and distributed cloud services. Yet running PostgreSQL in production is no longer about managing a single server. It requires scaling, observability, automation, failover safety, backup integrity, and predictable resilience. This book is a complete, practical, and deeply technical guide to building and operating production-grade PostgreSQL environments-from single-instance administration to fully automated high-availability clusters with self-healing, monitoring, and disaster recovery. Designed for database administrators, DevOps engineers, SREs, platform teams, and backend developers, this book teaches not only how to run PostgreSQL, but how to trust it in real-world operational environments. What You Will Learn Foundations & Core Administration PostgreSQL architecture, memory layout, WAL, background processes, and directory structure Role management, access control, authentication, and security hardening Configuration tuning, logging, and lifecycle administration Performance, Query Optimization & Scaling Understanding query planning, indexing strategies, and execution profiling Improving joins, complex queries, and workload performance Tuning memory, storage, I/O, autovacuum, and checkpoint behavior High Availability & Automated Failover Streaming replication and replication topology design Patroni-based automated failover with Distributed Consensus (DCS) HAProxy load balancing and PgBouncer connection pooling Recovery safety, replica integrity, and split-brain avoidance Infrastructure-as-Code & Automation Provisioning repeatable environments with Terraform Configuration management with Ansible roles and playbooks Rolling upgrades, controlled switchover, and zero-downtime migration workflows Monitoring, Backup & Disaster Recovery Prometheus + Grafana observability for real-time performance insight pgBackRest backups with full, incremental, WAL archiving, and PITR restore drills Validating RPO/RTO objectives and failure-mode readiness Full End-to-End Production DeploymentA complete, reproducible, capstone lab guides you through building a self-healing, observed, scaled PostgreSQL HA cluster with: Automated failover Secure routing layers Continuous backup + PITR readiness Load testing and failover validation under real workload pressure Who This Book Is For Database Administrators who want to run PostgreSQL with confidence DevOps & SRE Engineers implementing resilient stateful services Backend & Platform Engineers deploying mission-critical data workloads Organizations migrating from proprietary databases to PostgreSQL If your goal is to operate PostgreSQL as a reliable platform-not just a database-this book is for you. No guesswork. No outdated patterns. No theory without implementation. Master PostgreSQL not just to run it - but to trust it. Build systems that are automated, resilient, observable, recoverable, and engineered for the real world.

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