PostgreSQL 第二版，修订版 178355060

简介：
Utilize the capabilities of PostgreSQL replication to enhance the resilience, security, scalability, and performance of your databases. This book provides a thorough exploration of PostgreSQL replication, equipping administrators with the knowledge and skills to implement robust and secure database environments. The book systematically guides readers through the essential techniques for replicating PostgreSQL using advanced methodologies, ensuring data protection and uninterrupted server operation. It emphasizes improvements in reliability, fault tolerance, and accessibility by maintaining consistency across redundant resources. Readers will gain practical experience with the latest version of PostgreSQL through a series of illustrative examples. This resource is specifically tailored for PostgreSQL administrators seeking to establish and comprehend replication strategies. Upon completion, readers will be proficient in bolstering database robustness and security by mastering PostgreSQL replication principles. The content covers utilizing Point-in-time Recovery for effective data restoration alongside replication processes. Furthermore, it details the configuration of both synchronous and asynchronous streaming replication methods. A significant portion of the book focuses on mastering the transaction log – a fundamental component underpinning most replication architectures – along with its critical role. It also delves into optimizing speed and reliability through an understanding of pgpool and PgBouncer technologies. Security enhancements are explored alongside geographically distributing data to bolster system availability. Additionally, the text examines Linux High Availability solutions for increased operational efficiency and security measures. The guide introduces widely adopted tools such as Slony, SkyTools, Postgres-XC, and walbouncer while demonstrating setup procedures for PL/Proxy. Finally, it provides an introduction to Bidirectional Replication (BDR), a novel technology enabling two-way data synchronization within PostgreSQL. The following table outlines the structure of this comprehensive guide: Chapter 1: Delves into foundational concepts related to database replication. Chapter 2: Provides a detailed explanation of the PostgreSQL transaction log – its significance and functionality – serving as a cornerstone for effective replication strategies. Chapter 3: Explores Point-in-time Recovery techniques for efficient data recovery processes integrated with replication mechanisms. Chapter 4: Offers step-by-step instructions on configuring asynchronous replication setups within PostgreSQL environments. Chapter 5: Presents guidance on establishing synchronous replication configurations to ensure data consistency across multiple servers or locations.. Chapter 6: Covers monitoring strategies for PostgreSQL cluster deployments alongside familiarization with relevant monitoring tools.. Chapter 7: Examines Linux High Availability principles designed to improve system uptime and resilience.. Chapter 8: Details practical applications using PgBouncer technology to optimize database connections.. Chapter 9: Provides insights into utilizing pgpool for enhanced database management capabilities.. Chapter 10: Guides users through configuring Slony – a popular shared storage solution – for replicated environments.. Chapter 11: Explores the functionalities offered by SkyTools – a suite of utilities supporting PostgreSQL administration.. Chapter 12: Demonstrates how to leverage Postgres-XC for scaling out PostgreSQL deployments across multiple nodes.. Chapter 13: Illustrates scaling strategies using PL/Proxy – facilitating efficient database access from various client locations.. Chapter 14: Introduces BDR (Bidirectional Replication) – a new technology enabling bi-directional data synchronization within PostgreSQL systems.. Chapter 15: Covers best practices associated with Walbouncer - enhancing database security through connection control mechanisms .