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    CHAPTER 01 PostgreSQL ¾ÆÅ°ÅØó
    1. ÁÖ¿ä ÇÁ·Î¼¼½º
    1.1 Postmaster ÇÁ·Î¼¼½º
    1.2 Backend ÇÁ·Î¼¼½º
    1.3 Background ÇÁ·Î¼¼½º

    2. ¸Þ¸ð¸®
    2.1 °øÀ¯ ¸Þ¸ð¸®(Shared Memory)
    2.2 ·ÎÄà ¸Þ¸ð¸®(Local Memory)

    3. PostgreSQL ±¸Á¶
    3.1 ³í¸® ±¸Á¶(Logical Structure)
    3.2 ¹°¸® ±¸Á¶(Physical Structure)

    4. Shared Buffer
    4.1 Shared Buffer ±¸¼º ¿ä¼Ò
    4.2 Shared Buffer¿¡¼­ µ¥ÀÌÅÍ Àбâ
    4.3 Clock Sweep
    4.4 PostgreSQL IO Àü·«

    5. WAL(Write-Ahead Log)
    5.1 WAL ¼¼±×¸ÕÆ® ÆÄÀÏ
    5.2 üũÆ÷ÀÎÆ®(Checkpoint)
    5.3 WAL ¼¼±×¸ÕÆ® ÆÄÀÏ°ü¸®
    5.4 WAL ·¹ÄÚµå ±â·ÏÇϱâ
    5.5 WAL ÆÄÀÏÀ» ÀÌ¿ëÇÑ µ¥ÀÌÅÍ º¹±¸

    CHAPTER 02 Æ®·£Àè¼Ç°ú MVCC
    1. Æ®·£Àè¼Ç °Ý¸® ¼öÁØ(Transaction Isolation Level)
    1.1 PostgreSQL¿¡¼­ÀÇ °Ý¸® ¼öÁØ

    2. µ¥ÀÌÅÍ ÀúÀå ±¸Á¶
    2.1 ÆäÀÌÁö ±¸Á¶
    2.2 Transaction ID
    2.3 Æ©Çà ±¸Á¶
    2.4 Æ©ÇÃ ¹öÀü
    2.5 À妽º¿Í Æ©ÇÃ

    3. ½º³À¼¦(Snapshot)
    3.1 ½º³À¼¦À̶õ?
    3.2 ½º³À¼¦°ú Æ©Çà °¡½Ã¼º
    3.3 ½º³À¼¦°ú µ¥ÀÌÅͺ£À̽º Horizon
    3.4 Exporting Snapshot
    3.5 Snapshot too old

    4. ´ÜÀÏ ÆäÀÌÁö Á¤¸®¿Í HOT ¾÷µ¥ÀÌÆ®
    4.1 Fillfactor
    4.2 ´ÜÀÏ ÆäÀÌÁö Á¤¸®(Single Page Cleanup)
    4.3 HOT(Heap Only Tuple) Update

    5. MVCC(Multi Version Concurrency Control)
    5.1 MVCC¶õ?
    5.2 XID ¼øȯ ±¸Á¶¿Í Frozen XID
    5.3 Age

    6. Vacuum and Autovacuum
    6.1 Vacuum
    6.2 Autovacuum

    CHAPTER 03 ¶ô(LOCK)
    1. °´Ã¼ ·¹º§ ¶ô(Object Level Lock)
    1.1 °´Ã¼ ŸÀÔ
    1.2 °´Ã¼ ¶ô ¸ðµå

    2. Çà ·¹º§ ¶ô(Row Level Lock)
    2.1 Çà ·¹º§ ¶ô ¸ðµå
    2.2 ´ÙÁß Æ®·£Àè¼Ç(Multitransactions)
    2.3 Æ©Çà ¶ô ´ë±â
    2.4 Dead Lock

    3. ¸Þ¸ð¸® ·¹º§ ¶ô(Memory Level Lock)
    3.1 Light-Weight Lock(LWLocks)
    3.2 Spinlocks
    3.3 Buffer Pin Lock
    3.4 WAL Buffer Lock
    3.5 ¸Þ¸ð¸® ¶ô ¸ð´ÏÅ͸µ

    CHAPTER 04 SQL Execution
    1. Cost Based Optimizer
    1.1 CBO Cost

    2. PostgreSQL Åë°èÁ¤º¸
    2.1 ¼öµ¿ Åë°èÁ¤º¸ ¼öÁý
    2.2 Åë°èÁ¤º¸ °ü¸®

    3. ½ÇÇà °èȹ
    3.1 ½ÇÇà°èȹ ÃßÃâ ¹æ¹ý
    3.2 ½ÇÇà°èȹ ºÐ¼®

    4. SQLó¸® °úÁ¤
    4.1 SQL ó¸® ÇÁ·Î¼¼½º
    4.2 Prepare Statement

    5. ½ºÄµ ¹æ¹ý(Scan Method)
    5.1 Sequential Scan
    5.2 Index Scan
    5.3 Bitmap Index Scan
    5.4 Index Only Scan
    5.5 Covering Index

    6. Á¶ÀÎ ¹æ¹ý(Join Method)
    6.1 Nested Loop Join
    6.2 Hash Join
    6.3 Sort-Merge Join

    Appendix
    1. °Ý¸® ¼öÁØ¿¡ µû¸¥ ÀÌ»ó Çö»ó
    1.1 Read Committed
    1.2 Repeatable Read
    1.3 Serializable

    2. Å×À̺í ÆØâ(Bloating) ¸ð´ÏÅ͸µ

    3. SQL ¸ð´ÏÅ͸µ
    3.1 pg_stat_statements
    3.2 pg_stat_monitor

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