Relay device and relay method

A relay method executed by a relay device for transmitting a data group received from a transmission source to a transmission destination, the method comprising:

• receiving, by the relay device, part data of the data group from the transmission source;
• storing the received part data in a first storage region in accordance with storing order when there is a free region in the first storage region, the first storage region being included in a first storage unit;
• storing the received part data in a second storage region when there is no free region in the first storage region, the second storage region being included in the first storage unit;
• evacuating the part data stored in the second storage region to a second storage unit in accordance with the storing order;
• deleting the evacuated part data from the second storage region;
• transmitting the part data stored in the first storage region to the transmission destination;
• deleting the transmitted part data from the first storage region to generate a free region in the first storage region;
• determining whether any part data remains in the second storage unit;
• determining whether a free region has been generated in the first storage region;
• restoring, when it is determined that some part data remains in the second storage unit and that a free region has been generated in the first storage region, the remaining part data to the generated free region in accordance with the storing order;
• and
• deleting the restored part data from the second storage unit.

A computer-readable recording medium storing a program that causes a computer to execute a procedure, the procedure comprising:

• receiving part data of a data group from a transmission source;
• storing the received part data in a first storage region in accordance with storing order when there is a free region in the first storage region, the first storage region being included in a first storage unit;
• storing the received part data in a second storage region when there is no free region in the first storage region, the second storage region being included in the first storage unit;
• evacuating the part data stored in the second storage region to a second storage unit in accordance with the storing order;
• deleting the evacuated part data from the second storage region;
• transmitting the part data stored in the first storage region to a transmission destination;
• deleting the transmitted part data from the first storage region to generate a free region in the first storage region;
• determining whether any part data remains in the second storage unit;
• determining whether a free region has been generated in the first storage region;
• restoring, when it is determined that some part data remains in the second storage unit and that a free region has been generated in the first storage region, the remaining part data to the generated free region in accordance with the storing order;
• and
• deleting the restored part data from the second storage unit.