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Target customers: all request-intensive users who require large numbers of application connections, short-lived connections, and tenant connections. Features released: ApsaraDB RDS for PostgreSQL supports the PgBouncer connection pooler. You can use PgBouncer to reduce the overheads of excessive connections on the creation and release of RDS instance resources, optimize the memory usage, improve the instance performance in high-concurrency scenarios, and respond to client requests in an efficient manner.