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1 | | -<!-- $PostgreSQL: pgsql/doc/src/sgml/high-availability.sgml,v 1.33 2008/11/17 18:55:14 momjian Exp $ --> |
| 1 | +<!-- $PostgreSQL: pgsql/doc/src/sgml/high-availability.sgml,v 1.34 2008/11/19 04:46:37 momjian Exp $ --> |
2 | 2 |
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3 | 3 | <chapter id="high-availability"> |
4 | 4 | <title>High Availability, Load Balancing, and Replication</title> |
@@ -287,6 +287,28 @@ protocol to make nodes agree on a serializable transactional order. |
287 | 287 |
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288 | 288 | <tbody> |
289 | 289 |
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| 290 | + <row> |
| 291 | + <entry>Most Common Implementation</entry> |
| 292 | + <entry align="center">NAS</entry> |
| 293 | + <entry align="center">DRBD</entry> |
| 294 | + <entry align="center">PITR</entry> |
| 295 | + <entry align="center">Slony</entry> |
| 296 | + <entry align="center">pgpool-II</entry> |
| 297 | + <entry align="center">Bucardo</entry> |
| 298 | + <entry align="center"></entry> |
| 299 | + </row> |
| 300 | + |
| 301 | + <row> |
| 302 | + <entry>Communication Method</entry> |
| 303 | + <entry align="center">shared disk</entry> |
| 304 | + <entry align="center">disk blocks</entry> |
| 305 | + <entry align="center">WAL</entry> |
| 306 | + <entry align="center">table rows</entry> |
| 307 | + <entry align="center">SQL</entry> |
| 308 | + <entry align="center">table rows</entry> |
| 309 | + <entry align="center">table rows and row locks</entry> |
| 310 | + </row> |
| 311 | + |
290 | 312 | <row> |
291 | 313 | <entry>No special hardware required</entry> |
292 | 314 | <entry align="center"></entry> |
@@ -375,17 +397,6 @@ protocol to make nodes agree on a serializable transactional order. |
375 | 397 | <entry align="center">•</entry> |
376 | 398 | </row> |
377 | 399 |
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378 | | - <row> |
379 | | - <entry>Communication Method</entry> |
380 | | - <entry align="center">shared disk</entry> |
381 | | - <entry align="center">disk blocks</entry> |
382 | | - <entry align="center">WAL</entry> |
383 | | - <entry align="center">table rows</entry> |
384 | | - <entry align="center">SQL</entry> |
385 | | - <entry align="center">table rows</entry> |
386 | | - <entry align="center">table rows and row locks</entry> |
387 | | - </row> |
388 | | - |
389 | 400 | </tbody> |
390 | 401 | </tgroup> |
391 | 402 | </table> |
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