x_spooling is our spooling system for market data, in other words our market data processing integration framework
x_spooling is mainly implemented in Shell scripts.
x_spooling includes a variety of automated smart and configurable downloaders and uploaders for various underlying protocols (FTP, HTTP, rsync, ).
x_spooling loader spoolers[1] includes the calls to your data loaders together with mechanisms for post loading jobs.
[1] for historical reasons also known as response spoolers