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Add replication FAQ item.

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Bruce Momjian
2005-04-24 11:48:52 +00:00
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doc/src/FAQ/FAQ.html
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<H1>Frequently Asked Questions (FAQ) for PostgreSQL</H1>
<P>Last updated: Sun Apr 24 07:27:43 EDT 2005</P>
<P>Last updated: Sun Apr 24 07:48:48 EDT 2005</P>
<P>Current maintainer: Bruce Momjian (<A href=
"mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</A>)
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does not exist" errors when accessing temporary tables in PL/PgSQL
functions?<BR>
<A href="#4.20">4.20</A>) What encryption options are available?<BR>
<A href="#4.21">4.21</A>) What replication solutions are available?<BR>
<HR>
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<LI>The server can also run using an encrypted file system.</LI>
</UL>
<H3><A name="4.21">4.21</A>) What replication solutions are available?
</H3>
<P>Though "replication" is a single term, there are two major replication
technologies. Multi-master replication allows read/write queries to be
sent to multiple replicated computers. This capability has a
serious performance impact. <A href="http://pgfoundry.org/projects/pgcluster/">
Pgcluster</A> is the most popular such solution available for PostgreSQL.
Master-slave replication allows a single master to receive read/write
queries, with slaves able to accept only read/<SMALL>SELECT</SMALL> queries.
The most popular master-slave PostgreSQL replication solution is
<A href="http://gborg.postgresql.org/project/slony1/projdisplay.php">
Slony</A>. There are also commercial and hardware-based replication
solutions available.</P>
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