Arquitectura de PostgreSQL
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The document summarizes the architecture of PostgreSQL, including its processes, parameters, memory usage, write-ahead logging (WAL) and checkpointing, planning and optimization, logging, and lock management. Key processes include the WAL writer, background writer, checkpointer, autovacuum, logger, archiver, and stats collector. Important parameters configure shared buffers, work memory, WAL level, synchronous commit, and logging levels.
Arquitectura de PostgreSQL
- 2. 1/Estructura
- 4. 2/Procesos
- 5. ● WAL Writer ● Background Writer ● Checkpointer 2.1/Procesos Requeridos
- 6. ● Autovacuum ● Logger ● Archiver ● Stats collector ● WAL Sender ● WAL Receiver ● Background Workers 2.1/Procesos Opcionales
- 7. 3/Parámetros
- 8. ● shared_buffers ● temp_buffers ● work_mem ● maintenance_work_mem 3.1/Memoria
- 9. ● wal_level ● fsync ● synchronous_commit ● checkpoint_timeout (default=5min) 3.2/WAL & Checkpointer
- 10. ● seq_page_cost ● random_page_cost ● min_parallel_table_scan_size ● min_parallel_index_scan_size ● geqo ● geqo_threshold ● default_statistics_target 3.3/Planner & Genetic Query Optimizer
- 11. ● log_statement (none, ddl, mod, all) ● log_min_duration_statement 3.4/logging
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