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Mention warm and now "hot" standby servers in the high availability docs.

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Bruce Momjian 2010-02-05 23:53:22 +00:00
parent 4b113d9cdc
commit 6ba9b9102a
1 changed files with 8 additions and 7 deletions
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15
doc/src/sgml/high-availability.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/high-availability.sgml,v 1.37 2010/02/03 17:25:05 momjian Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/high-availability.sgml,v 1.38 2010/02/05 23:53:22 momjian Exp $ -->
<chapter id="high-availability">
<title>High Availability, Load Balancing, and Replication</title>
@ -135,21 +135,22 @@ protocol to make nodes agree on a serializable transactional order.
</varlistentry>
<varlistentry>
<term>Warm Standby Using Point-In-Time Recovery (<acronym>PITR</>)</term>
<term>Warm and Hot Standby Using Point-In-Time Recovery (<acronym>PITR</>)</term>
<listitem>
<para>
A warm standby server (see <xref linkend="warm-standby">) can
be kept current by reading a stream of write-ahead log (<acronym>WAL</>)
Warm and hot standby servers can be kept current by reading a
stream of write-ahead log (<acronym>WAL</>)
records. If the main server fails, the warm standby contains
almost all of the data of the main server, and can be quickly
made the new master database server. This is asynchronous and
can only be done for the entire database server.
</para>
<para>
A PITR warm standby server can be kept more up-to-date using the
streaming replication feature built into <productname>PostgreSQL</> 8.5
onwards; see <xref linkend="warm-standby">.
A PITR standby server can be kept more up-to-date using streaming
replication.; see <xref linkend="streaming-replication">. For
warm standby information, see <xref linkend="warm-standby">, and
for hot standby, see <xref linkend="hot-standby">.
</para>
</listitem>
</varlistentry>