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author | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2011-05-03 11:34:27 -0300 |
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committer | Alvaro Herrera <alvherre@alvh.no-ip.org> | 2011-05-03 11:34:27 -0300 |
commit | 561485709673f4bc05240e891dd9056bdedbbcbc (patch) | |
tree | 778cffcb97e709bdbf08166b3cc7818595eba042 /doc/src | |
parent | 155743ad3108cd586d56e864d1209b82f9a716f0 (diff) | |
download | postgresql-561485709673f4bc05240e891dd9056bdedbbcbc.tar.gz postgresql-561485709673f4bc05240e891dd9056bdedbbcbc.zip |
Improve description of read/write traffic scalability
Greg Smith, after a suggestion of James Bruce
Diffstat (limited to 'doc/src')
-rw-r--r-- | doc/src/sgml/high-availability.sgml | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/doc/src/sgml/high-availability.sgml b/doc/src/sgml/high-availability.sgml index 5972a45555f..5bb45fea7e9 100644 --- a/doc/src/sgml/high-availability.sgml +++ b/doc/src/sgml/high-availability.sgml @@ -188,9 +188,10 @@ protocol to make nodes agree on a serializable transactional order. <para> With statement-based replication middleware, a program intercepts every SQL query and sends it to one or all servers. Each server - operates independently. Read-write queries are sent to all servers, - while read-only queries can be sent to just one server, allowing - the read workload to be distributed. + operates independently. Read-write queries must be sent to all servers, + so that every server receives any changes. But read-only queries can be + sent to just one server, allowing the read workload to be distributed + among them. </para> <para> |