| 摘要 |
PROBLEM TO BE SOLVED: To monitor operations of application of each client without troubling a work of an original distributed system. SOLUTION: A log storage means 223 stores logs to be outputted from the application 22a and transmits the logs only when they can be transmitted to a center server 10. A log storage means 12 stores the logs transmitted from each client. A log confirming means 13 detects unreceived logs based on the logs stored in the center server 10 in first timing to be generated by a startup trigger 100. A disappeared log collecting means 14 transmits transmission requests of the unreceived logs from the center server 10 to each client 200 in second optional timing to be generated by the startup trigger 100. A disappeared log acquiring means 14 reads the unreceived logs among the logs stored in a log storage device 225 and transmits them to the center server 10.
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