Class: LBFactoryMulti  - X-Ref

A multi-wiki, multi-master factory for Wikimedia and similar installations.
Ignores the old configuration globals

Configuration:
sectionsByDB                A map of database names to section names.

sectionLoads                A 2-d map. For each section, gives a map of server names to
load ratios. For example:
array(
'section1' => array(
'db1' => 100,
'db2' => 100
)
)

serverTemplate              A server info associative array as documented for $wgDBservers.
The host, hostName and load entries will be overridden.

groupLoadsBySection         A 3-d map giving server load ratios for each section and group.
For example:
array(
'section1' => array(
'group1' => array(
'db1' => 100,
'db2' => 100
)
)
)

groupLoadsByDB              A 3-d map giving server load ratios by DB name.

hostsByName                 A map of hostname to IP address.

externalLoads               A map of external storage cluster name to server load map.

externalTemplateOverrides   A set of server info keys overriding serverTemplate for external
storage.

templateOverridesByServer   A 2-d map overriding serverTemplate and
externalTemplateOverrides on a server-by-server basis. Applies
to both core and external storage.

templateOverridesByCluster  A 2-d map overriding the server info by external storage cluster.

masterTemplateOverrides     An override array for all master servers.

readOnlyBySection           A map of section name to read-only message.
Missing or false for read/write.