Relay device

A relay method applied to a relay device which is connected with each of a plurality of external devices and transmits data received from one of the external devices to a transfer destination device which is another one of the external devices, the data including attribute information representing each of a plurality of attributes held by the data, the relay device including:

• a first rule information storage unit that stores first rule information for specifying the transfer destination device based on attribute information with respect to each of attributes constituting a first attribute group including the plurality of the attributes;
• and
• a second rule information storage unit that stores second rule information for specifying the transfer destination device based on attribute information with respect to each of one or more attributes constituting a second attribute group including part of the plurality of the attributes,
• the method comprising
• performing migration processing including, in a case where an information quantity stored in the first rule information storage unit is larger than a preset first threshold quantity, if information for specifying the transfer destination device only based on the attribute information with respect to each of the attributes constituting the second attribute group is stored in the first rule information storage unit as the first rule information, storing the first rule information as the second rule information in the second rule information storage unit, and deleting the first rule information from the first rule information storage unit.

A non-transitory computer readable medium storing a program implemented by a relay device which is connected with each of a plurality of external devices and transmits data received from one of the external devices to a transfer destination device which is another one of the external devices, the data including attribute information representing each of a plurality of attributes held by the data,

• the relay device including:
• a first rule information storage unit that stores first rule information for specifying the transfer destination device based on attribute information with respect to each of attributes constituting a first attribute group including the plurality of the attributes;
• and
• a second rule information storage unit that stores second rule information for specifying the transfer destination device based on attribute information with respect to each of one or more attributes constituting a second attribute group including part of the plurality of the attributes,
• the program comprising instructions for causing the relay device to realize a transfer control unit that performs migration processing including, in a case where an information quantity stored in the first rule information storage unit is larger than a preset first threshold quantity, if information for specifying the transfer destination device only based on the attribute information with respect to each of the attributes constituting the second attribute group is stored in the first rule information storage unit as the first rule information, storing the first rule information as the second rule information in the second rule information storage unit, and deleting the first rule information from the first rule information storage unit.

A relay device which is connected with each of a plurality of external devices and transmits data received from one of the external devices to a transfer destination device which is another one of the external devices, the data including attribute information representing each of a plurality of attributes held by the data, the relay device comprising:

• first rule information storage means for storing first rule information for specifying the transfer destination device based on attribute information with respect to each of attributes constituting a first attribute group including the plurality of the attributes;
• second rule information storage means for storing second rule information for specifying the transfer destination device based on attribute information with respect to each of one or more attributes constituting a second attribute group including part of the plurality of the attributes;
• and
• transfer control means for performing migration processing including, in a case where an information quantity stored in the first rule information storage means is larger than a preset first threshold quantity, if information for specifying the transfer destination device only based on the attribute information with respect to each of the attributes constituting the second attribute group is stored in the first rule information storage means as the first rule information, storing the first rule information as the second rule information in the second rule information storage means, and deleting the first rule information from the first rule information storage means.