Variable history
Component ID
2215653
Component name
Variable history
Component type
module
Maintenance status
Development status
Component security advisory coverage
not-covered
Component created
Component changed
Component body
Using variable_set() is a very expensive operation that can cause cache stampedes and other horrible side effects for performance. This module simply adds a timestamp column to the variables table to track down which variables are changing.
Alternatively, a unique variables backend can be used with the patch in #1193396: Make variable subsystem pluggable via includes/variable.inc
