Increased Availability for Networked Software Services

Increased Availability for Networked Software Services

The availability of networked software services is an increasingly important quality of service issue. A service user gauges service availability in terms of initial access time and subsequent service delivery time. This paper develops – from a user perspective – a quality of service framework for the availability of networked software services. The paper utilises this quality of service framew...

Optimising Complex Networked Systems Availability

With the Singapore Armed Forces (SAF) building up network-centric warfare capabilities, the reliance on the multiplier effects from interconnectivity and collaborative operations among forces becomes increasingly critical. Availability has been applied typically at the system level, as a means to analyse the readiness and logistics effectiveness of the fighting force. Such a standalone system l...

Enhancing the Availability of Networked Database Services by Replication and Consistency Maintenance

We describe an operational middleware platform for maintaining the consistency of replicated data objects, called COPla (Common Object Platform). It supports both eager and lazy update propagation for replicated data in networked relational databases. The purpose of replication is to enhance the availability of data objects and services in distributed database networks. Orthogonal to recovery s...

Standards for Networked Equipment and Services

INDISS: Interoperable Discovery System for Networked Services

The emergence of handheld devices associated with wireless technologies has introduced new challenges for middleware. First, mobility is becoming a key characteristic; mobile devices may move around different areas and have to interact with different types of networks and services, and may be exposed to new communication paradigms. Second, the increasing number and diversity of devices, as in p...