Advantages and drawbacks of state-persistence
State persistent applications are advantageous because they:
Allow a single database transaction to span multiple page requests and to be completely rolled back (undone) in case of error
Minimize the amount of data that needs to be passed from one request to another
Minimize database access (re-opening tables) for each request
However, there may also be considerable overhead associated with state persistent applications because they:
Lock a WebSpeed agent until a transaction terminates
May tie up one or more database records until the transaction terminates
