Slony-I-实施指南.pdf
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Slony-I
Areplication system for PostgreSQL
Implementation details
JanWieck
Afilias USA INC.
Horsham, Pennsylvania, USA
ABSTRACT
This document describes severalimplementation details of
the Slony-I replication engine and related components.
Slony-I -i- Wor king document
TableofContents
1. Control data ..................... 1
1.1. Table sl_node .................... 1
1.2. Table sl_path .................... 1
1.3. Table sl_listen .................... 2
1.4. Table sl_set ..................... 2
1.5. Table sl_table . ................... 2
1.6. Table sl_subscribe . ................. 2
1.7. Table sl_event . ................... 2
1.8. Table sl_confirm. . . . . . . . . . . . . . . . . . . 2
1.9. Table sl_setsync ................... 3
1.10. Table sl_log_1 ................... 3
1.11. Table sl_log_2 ................... 3
2. Replication Engine Architecture .............. 4
2.1. Sync Thread .................... 4
2.2. Cleanup Thread ................... 4
2.3. Local Listen Thread .................. 4
2.4. Remote Listen Threads ................ 5
2.5. Remote Wor ker Threads ................ 5
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