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Update of /home/cvsd/slony1/slony1-www/content In directory main.slony.info:/tmp/cvs-serv31506 Modified Files: frontpage.txt Log Message: Add some notes on Logical Decoding as an alternative to Slony Index: frontpage.txt =================================================================== RCS file: /home/cvsd/slony1/slony1-www/content/frontpage.txt,v retrieving revision 1.44 retrieving revision 1.45 diff -C 2 -d -r1.44 -r1.45 *** frontpage.txt 26 Oct 2010 18:32:06 -0000 1.44 --- frontpage.txt 1 Jan 2017 04:48:25 -0000 1.45 *************** *** 36,44 **** 9.0 Streaming Replication vs Slony </a>. ! <P> As observed up front, the streaming replication built into PostgreSQL, ! which has progressed since its beginnings in version 8.1, can satisfy ! some users' replication requirements. For those with requirements that ! are not compatible with its strictures, replication systems like Slony-I ! will continue to be useful. --- Slony-I 2.0.5 Released --- 36,57 ---- 9.0 Streaming Replication vs Slony </a>. ! <P> As observed up front, the streaming replication built into ! PostgreSQL, which has progressed since its beginnings in version 8.1, ! can satisfy some users' replication requirements. For those with ! requirements that are not compatible with its strictures, replication ! systems like Slony-I will continue to be useful. ! ! <P> PostgreSQL 9.4 introduced <b>Logical Replication</b>, which uses ! logical decoding of WAL data as an alternative to trigger-based data ! capture. In the long run, this strategy seems likely to be more ! performant than Slony, and to eventually obsolesce Slony for many use ! cases <i>not</i> involving upgrades between PostgreSQL versions. ! However, <b>Logical Replication/Logical Decoding</b> will only support ! recent versions of PostgreSQL (and inter-PostgreSQL-version support ! may be aspirational moreso than actual), so if you have a database ! running on 9.3 or earlier, there is a likelihood that ! short-outage-upgrades will require something like Slony that runs ! against a diverse set of versions of PostgreSQL. ! --- Slony-I 2.0.5 Released
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