Server and method for managing monitored data

摘要

A monitoring server receives the latest monitored data and corresponding monitoring time from monitoring devices connected to the server at a specified time interval. The monitoring server records monitored data of each monitoring item and the corresponding monitoring time to a pointed node of a device data list, and adds the monitored data and the corresponding monitoring time, which are recorded in the pointed node of the device data list, into a monitored data list. When a web server requests real-time monitored data, corresponding monitored data is read from the device data list and sent to the web server. When the web server requests historical monitored data of an designated period, corresponding monitored data of the designated period is read from the monitored data list and sent to the web server.

主权项

1. A method for managing monitored data being executed by a processor of a server, the method comprising:
(a) setting a device data list and a monitored data list in a storage unit of the server, and setting a preset length N of the monitored data list; (b) controlling a cycle index to point to a first node of the device data list; (c) receiving latest monitored data and corresponding monitoring time from monitoring devices connected to the server at a specified time interval; (d) reading the latest monitored data of each monitoring item and the corresponding monitoring time in sequence; (e) controlling the cycle index to point to a next node of the device data list in response to the cycle index not pointing to the last node of the device data list; (f) recording monitored data of a present read monitoring item and corresponding monitoring time to the pointed node; (g) removing the oldest record in the monitored data list in response to a present length of the monitored data list equaling the preset length N; and (h) adding monitored data and corresponding monitoring time, which are recorded in the pointed node of the device data list, into the monitored data list, in response to the present length of the monitored data list not equaling the preset length N or the oldest record in the monitored data list is removed.