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ÇѱÛÁ¦¸ñ(Korean Title) |
SDP Master ÀÌÁßȸ¦ Áö¿øÇÏ´Â È®Àå SLDS ¼³°è ¹× ±¸Çö |
¿µ¹®Á¦¸ñ(English Title) |
Design and Implementation of the Extended SLDS Supporting SDP Master Replication |
ÀúÀÚ(Author) |
½ÅÀμö
In-Su Shin
°È«±¸
Hong-Koo Kang
À̱⿵
Ki-Young Lee
ÇѱâÁØ
Ki-Joon Han
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¿ø¹®¼ö·Ïó(Citation) |
VOL 10 NO. 03 PP. 0079 ~ 0091 (2008. 09) |
Çѱ۳»¿ë (Korean Abstract) |
ÃÖ±Ù À̵¿Ã¼ÀÇ À§Ä¡ µ¥ÀÌŸ¸¦ È°¿ëÇÑ À§Ä¡ ±â¹Ý ¼ºñ½º¿¡ ´ëÇÑ °ü½ÉÀÌ ³ô¾ÆÁö¸é¼ º¸´Ù È¿À²ÀûÀÎ À̵¿Ã¼ À§Ä¡ µ¥ÀÌŸ °ü¸® ½Ã½ºÅÛÀ¸·Î Ŭ·¯½ºÅÍ ±â¹Ý ºÐ»ê ÄÄÇ»Æà ±¸Á¶ÀÎ GALIS(Gracefully Aging Location Information System)°¡ Á¦½ÃµÇ¾ú´Ù. ±×·¯³ª, GALISÀÇ ¼ºê ½Ã½ºÅÛÀÎ SLDS(Short-term Location Data Subsystem)¿¡¼ SDP Master´Â ´Ù¼öÀÇ SDP(Short-term Data Processor) ³ëµåµéÀÌ Ã³¸®ÇÑ ÁúÀÇ °á°ú¸¦ ÃëÇÕÇÏ¿© Client·Î º¸³»´Â ±¸Á¶À̱⠶§¹®¿¡ SDP Master¿¡ Àå¾Ö°¡ ¹ß»ýÇϰųª ºÎÇÏ°¡ ÁýÁßµÉ °æ¿ì¿¡ ¼ºñ½º°¡ ÁßÁöµÇ°Å³ª Client·ÎÀÇ ÀÀ´ä ½Ã°£ÀÌ ±æ¾îÁö´Â ¹®Á¦°¡ ÀÖ´Ù. µû¶ó¼, º» ³í¹®¿¡¼´Â ±âÁ¸ SLDS¿¡ ÀÌÁßȸ¦ Áö¿øÇϱâ À§ÇØ SDP Master¸¦ Ãß°¡ÇÏ¿© ±âÁ¸ SLDSÀÇ ¾ÈÁ¤¼º°ú °¡¿ë¼ºÀ» ³ôÀÌ°í À̵¿Ã¼ À§Ä¡ µ¥ÀÌŸÀÇ ÁúÀÇ Ã³¸® ¼º´ÉÀ» Çâ»ó½ÃŲ È®Àå SLDS¸¦ ¼³°è ¹× ±¸ÇöÇÏ¿´´Ù. È®Àå SLDS¿¡¼´Â ÀÌÁßÈµÈ µÎ ´ëÀÇ SDP Master¸¦ °¡µ¿ÇÏ¿© ÇÑ SDP Master¿¡ Àå¾Ö°¡ ¹ß»ýÇÏ´õ¶óµµ ´Ù¸¥ SDP Master°¡ ¼ºñ½º¸¦ °è¼Ó Á¦°øÇÔÀ¸·Î½á ÇöÀç À§Ä¡ µ¥ÀÌŸÀÇ ½Ç½Ã°£¼º°ú ½Ã½ºÅÛÀÇ ¾ÈÁ¤¼ºÀ» º¸ÀåÇÑ´Ù. ¶ÇÇÑ, È®Àå SLDS´Â µÎ ´ëÀÇ SDP Master°¡ ÁúÀÇ Ã³¸®¸¦ ºÐ»êÇÏ¿© ¼öÇàÇϱ⠶§¹®¿¡ Client·ÎÀÇ ÀÀ´ä ½Ã°£À» ÁÙÀÏ ¼ö ÀÖ´Ù. ¸¶Áö¸·À¸·Î È®Àå SLDSÀÇ Àå¾Ö Å×½ºÆ®¿Í ÁúÀÇ Ã³¸® ¼º´ÉÀ» ½ÇÇèÇÏ¿´À¸¸ç, ÀÌ·¯ÇÑ ½ÇÇèÀ» ÅëÇØ È®Àå SLDSÀÇ °í½Å·Ú¼º ¹× °í°¡¿ë¼ºÀ» °ËÁõÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
Recently, with highly interest in Location-Based Service(LBS) utilizing location data of moving objects, the GALIS(Gracefully Aging Location Information System) which is a cluster-based distributed computing architecture was proposed as a more efficient location management system of moving objects. In the SLDS(Short-term Location Data Subsystem) which is a subsystem of the GALIS, since the SDP(Short-term Data Processor) Master transmits current location data and queries to every SDP Worker, the SDP Master reassembles and sends query results produced by SDP Workers to the client.
However, the services are suspended during the SDP Master under failure and the response time to the client is increased if the load is concentrated on the SDP Master.
Therefore, in this paper, the extended SLDS was designed and implemented to solve these problems. Though one SDP Master is under failure, the other can provide the services continually, and so the extended SLDS can guarantee the high reliability of the SLDS. The extended SLDS also can reduce the response time to the client by enabling two SDP Masters to perform the distributed query processing. Finally, we proved high reliability and high availability of the extended SLDS by implementing the current location data storage, query processing, and failure takeover scenarios. We also verified that the extended SLDS is more efficient than the original SLDS through the query processing performance evaluation.
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Å°¿öµå(Keyword) |
ÀÌÁßÈ
ÇöÀç À§Ä¡ µ¥ÀÌŸ
SLDS
TMO
GALIS
Replication
Current location data
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ÆÄÀÏ÷ºÎ |
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