Last Modified: 15.09.2022
Module settings forms:
Maximum possible slave database delay (sec.) - after this time data will be automatically disabled to reduce risk of data unsynchronization.
Slave database delay is possible with a significant number of main (master) database updates, insufficiently quick connection between database master and slave, insufficient database slave performance.
database delay time is displayed in the table at the
Database replication is a process of creating and supporting its copy up to date...
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Group is an entity created only for purposes of convenience. Groups are used for merging "nodes" within a geo cluster. This allows to allocate the following custom hardware in different geographically-located data centers: database servers, Memcached-servers, Web server.
Each web server in a single group inside the file dbconn.php
must have a defined variable
with value matching to a group ID. Foe example:
Name of a second group can be "Group No.2", but the variable
BX_CLUSTER_GROUP must have an actual (autoincremental) identifier of this group that can be viewed at the page with list of server groups (Settings > Web Cluster > Server Groups).
The file dbconn.php should't be synchronized between groups.