Chris Browne cbbrowne at lists.slony.info
Sat Dec 31 20:48:27 PST 2016
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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