What is Work Memory in PostgreSQL ? | What is the value of Work_mem in PostgreSQL? | Ankush Sir

In PostgreSQL, "work_mem" refers to the amount of memory allocated for internal operations such as sorting and hash tables during query execution. This setting determines how much memory is used for operations like sorting and joins before PostgreSQL begins to use disk-based temporary files. The value of "work_mem" can significantly impact performance; higher values can improve performance for large queries by reducing the need for disk I/O, but setting it too high may lead to excessive memory usage, especially when handling multiple concurrent queries. Adjusting "work_mem" should be done carefully, considering the available system memory and workload requirements.

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