1. A method, comprising: monitoring, over a network on a front-end of a first server, a connection between the first server and a client; detecting that the first server is unresponsive, the detection is made when a second server that is trying to take over for the first server makes a request for a current sequence number for transactions occurring between the client and the first server; and updating a database when a last recorded sequence number in a synchronization store is less than the current sequence number associated with a last transaction.