Provided is a failure recovery method for switching to a standby system if a failure occurs in
an active system, which allows reduction of loads on the standby system and a network. A
computer system, which receives data to which timestamp information is appended in a
chronological order and processes the received data by registered queries, includes the
active system for processing the received data and the standby system for processing the
received data instead of the active system upon occurrence of a failure. The active system …