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Target customers: users whose workloads are involved in software as a service (SaaS) scenarios with a large number of persistent connections. Features released: The process-level cache eviction feature is supported to reduce the memory usage of persistent connections and ensure that your database does not run out of memory due to excessive persistent connections. The feature uses the Least Recently Used (LRU) policy to release caches that are infrequently used. This reduces the memory usage of connections and improves the stability of ApsaraDB RDS for PostgreSQL instances.