Pgpool-II is a powerful middleware that enhances PostgreSQL database management through features like connection pooling, replication, and load balancing. It acts as an intermediary between PostgreSQL servers and clients, optimizing database interactions and ensuring high availability and performance.
Connection Pooling: Reduces overhead by reusing existing connections to improve system throughput.
Replication Management: Enables real-time backups across multiple PostgreSQL servers to ensure data redundancy and reliability.
Load Balancing: Distributes SELECT queries across replicated servers to enhance performance and reduce individual server load.
Watchdog Functionality: Coordinates multiple Pgpool-II instances to maintain a robust cluster and prevent single points of failure.
In-Memory Query Cache: Speeds up query responses by storing results of SELECT statements for quick retrieval.