Have you configured PostgreSQL parameters for database optimization?

Yes, to optimize PostgreSQL performance, configuration parameters are often adjusted, such as:

• shared_buffers — the amount of memory allocated for caching data. Usually set to 25-40% of the RAM.
• work_mem — the amount of memory for sorting and hashing operations in queries.
• maintenance_work_mem — memory for maintenance operations like VACUUM or CREATE INDEX.
• effective_cache_size — an estimate of the memory available for filesystem caching, aiding the query planner.
• max_connections — the maximum number of concurrent connections.

Adjusting these parameters depends on the workload, data volume, and hardware resources. For example, for OLTP systems, increasing shared_buffers and work_mem can speed up transaction processing.

Example of changing parameters in postgresql.conf:

shared_buffers = 2GB
work_mem = 64MB

After modifying the configuration, a server restart or applying the parameters with SELECT pg_reload_conf(); is required.