Single I-rule with 1000+ URI Redirect

iControl is another option to build data groups. I've used this extensively for adding records into data groups by iterating through a CSV file containing /olduri/ and /new/uri key/value pairs...

function Add-DataGroupValues()
{
    param([string]$dataGroupName,[string[]]$dataGroupMember,[string]$dataGroupValue)
    $stringClass = New-Object -TypeName iControl.LocalLBClassStringClass
    $stringClass.name = $dataGroupName
    $stringClass.members = ((,$dataGroupMember))
    (Get-F5.iControl).LocalLBClass.add_string_class_member((,$stringClass))

    $stringValueClass = New-Object -TypeName iControl.LocalLBClassStringClass
    $stringValueClass.name = $dataGroupName
    $stringValueClass.members = ((,$dataGroupMember))
    $values = (Get-F5.iControl).LocalLBClass.set_string_class_member_data_value($stringValueClass,$dataGroupValue)
    }

 Get the CSV info
$records = Get-CSVInfo

 Add to data group
foreach($record in $records)
{
    $dataGroupMember = $record.Name
    $dataGroupValue = $record.Value
    Add-DataGroupValues $dataGroupName $dataGroupMember $dataGroupValue
}
(Get-F5.iControl).SystemConfigSync.save_configuration("bigip.conf","SAVE_FULL")