We introduce the concept of "quality of web-based services" (QoWS) which is inspired by the well known QoS principles for networks, but it is focused on the server side of the web system. In particular, we investigate how it is possible to enhance with QoWS mechanisms a web site that is hosted on a system platform consisting of locally distributed server nodes, namely web-server cluster or web cluster in short. We discuss and compare some QoWS policies and mechanisms that can be used to transform a best-effort web cluster into a QoWS-enhanced system. We determine a set of confident Service Level Agreements (SLAB) in a web cluster for different classes of users and web services. Moreover; we verify through a large set of simulation experiments under realistic workload models which mechanisms are valid for satisfying the pre-determined SLA target

Enhancing a Web-server cluster with Quality of Service mechanisms / V., Cardellini; E., Casalicchio; Colajanni, Michele; M., Mambelli. - STAMPA. - (2002), pp. 205-212. (Intervento presentato al convegno 21st IEEE International Performance, Computing, and Communications Conference, 2002. (IPCCC02) tenutosi a Phoenix, AZ, usa nel 3-5 April 2002) [10.1109/IPCCC.2002.995152].

Enhancing a Web-server cluster with Quality of Service mechanisms

COLAJANNI, Michele;
2002

Abstract

We introduce the concept of "quality of web-based services" (QoWS) which is inspired by the well known QoS principles for networks, but it is focused on the server side of the web system. In particular, we investigate how it is possible to enhance with QoWS mechanisms a web site that is hosted on a system platform consisting of locally distributed server nodes, namely web-server cluster or web cluster in short. We discuss and compare some QoWS policies and mechanisms that can be used to transform a best-effort web cluster into a QoWS-enhanced system. We determine a set of confident Service Level Agreements (SLAB) in a web cluster for different classes of users and web services. Moreover; we verify through a large set of simulation experiments under realistic workload models which mechanisms are valid for satisfying the pre-determined SLA target
2002
21st IEEE International Performance, Computing, and Communications Conference, 2002. (IPCCC02)
Phoenix, AZ, usa
3-5 April 2002
205
212
V., Cardellini; E., Casalicchio; Colajanni, Michele; M., Mambelli
Enhancing a Web-server cluster with Quality of Service mechanisms / V., Cardellini; E., Casalicchio; Colajanni, Michele; M., Mambelli. - STAMPA. - (2002), pp. 205-212. (Intervento presentato al convegno 21st IEEE International Performance, Computing, and Communications Conference, 2002. (IPCCC02) tenutosi a Phoenix, AZ, usa nel 3-5 April 2002) [10.1109/IPCCC.2002.995152].
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/587354
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 2
social impact