Overlapping Sliding Windows
Another way to configure your windows is to have them overlap each other. You may want overlapping windows in order to track things like moving averages or to help recognize related events that can span adjacent windows.
Depending on your configuration, the number of overlapping windows can grow fairly large, that's why it's important that group operators attempt to minimize the amount of memory they consume.
The following example uses a create strategy that opens a new window every 10 records and a close strategy to cap them to 40 records.