load-balance {
    [ module-1 ]
    [ module-2 ]
}The load-balance Statement
The load-balance section is similar to the redundant section
except that only one module in the subsection is ever called. The
module is chosen randomly, in a "load balanced" manner.
In general, the redundant-load-balance statement is more useful than this one.
Examples:
load-balance {
    sql1
    sql2
}