TY - GEN
T1 - A QoS-sensitive approach for timeliness and freshness guarantees in real-time databases
AU - Kang, Kyoung Don
AU - Son, S. H.
AU - Stankovic, J. A.
AU - Abdelzaher, T. F.
PY - 2002
Y1 - 2002
N2 - The demand for real-time database services has been increasing recently. Examples include sensor data fusion, decision support, Web information services, and online trading. In these applications, it is desirable to execute transactions within their deadlines using temporally consistent data. Due to the high service demand, real-time databases can be overloaded. As a result, many transactions may miss their deadlines, or data temporal consistency constraints can be violated. To address these problems, we present a QoS management scheme to support guarantees on deadline miss ratio and data freshness (temporal consistency) even in the presence of unpredictable workloads and data access patterns. Using our approach, admitted user transactions can be processed in time using fresh data. A simulation study shows that our QoS-sensitive approach can achieve a significant performance improvement, in terms of deadline miss ratio and data freshness, compared to several baseline approaches. Furthermore, our approach shows a comparable performance to the theoretical oracle that is privileged by a complete future knowledge of data accesses.
AB - The demand for real-time database services has been increasing recently. Examples include sensor data fusion, decision support, Web information services, and online trading. In these applications, it is desirable to execute transactions within their deadlines using temporally consistent data. Due to the high service demand, real-time databases can be overloaded. As a result, many transactions may miss their deadlines, or data temporal consistency constraints can be violated. To address these problems, we present a QoS management scheme to support guarantees on deadline miss ratio and data freshness (temporal consistency) even in the presence of unpredictable workloads and data access patterns. Using our approach, admitted user transactions can be processed in time using fresh data. A simulation study shows that our QoS-sensitive approach can achieve a significant performance improvement, in terms of deadline miss ratio and data freshness, compared to several baseline approaches. Furthermore, our approach shows a comparable performance to the theoretical oracle that is privileged by a complete future knowledge of data accesses.
UR - https://www.scopus.com/pages/publications/84884678478
U2 - 10.1109/EMRTS.2002.1019200
DO - 10.1109/EMRTS.2002.1019200
M3 - Conference contribution
AN - SCOPUS:84884678478
SN - 0769516653
SN - 9780769516653
T3 - Proceedings - Euromicro Conference on Real-Time Systems
SP - 203
EP - 212
BT - Proceedings - 14th Euromicro Conference on Real-Time Systems, ECRTS 2002
T2 - 14th Euromicro Conference on Real-Time Systems, ECRTS 2002
Y2 - 19 June 2002 through 21 June 2002
ER -