FSE

There is a growing interest in the area of self-healing systems. Self-healing does however impose considerable demands on system infrastructures---especially in terms of openness and support for reconfigurability. This paper proposes that the self-...

Service-discovery systems aim to provide consistent views of distributed components under varying network conditions. To achieve this aim, designers rely upon a variety of self-healing strategies, including: architecture and topology, failure-detection ...

Our approach to creating self-healing systems is based on software architecture, where repairs are done at the level of a software system's components and connectors. In our approach, event-based software architectures are targeted because they offer ...

Traditional mechanisms that allow a system to detect and recover from errors are typically wired into applications at the level of code where they are hard to change, reuse, or analyze. An alternative approach is to use externalized adaptation: one or ...

A self-organising software architecture is one in which components automatically configure their interaction in a way that is compatible with an overall architectural specification. The objective is to minimise the degree of explicit management ...

Considering the current trend of building systems from existing components that allow neither code inspection nor change, the solution for enabling dynamic adaptation of software systems should not be intrusive in the way that components should be ...

A major problem in todays Internet servers is that they suffer from extreme peak loads. Traditional (operating) systems are designed to perform extremely well under heavy load conditions. However, it is not feasible to over-provision resources only to ...

This paper argues for a set of requirements that an architectural style for self-healing systems should satisfy: adaptability, dynamicity, awareness, autonomy, robustness, distributability, mobility, and traceability. Support for these requirements is ...

Software that people use for everyday purposes is usually not mission critical---some failures can be tolerated. However, this software should be dependable enough for its intended use, even when users change expectations. Software systems that could ...

Distributed applications are notoriously difficult to develop and manage due to their inherent dynamics and heterogeneity of component technologies and network protocols. Middleware technologies dramatically simplify the development of distributed ...

Online adaptation is a powerful means to handle unexpected slow or catastrophic changes of the system's behavior (e.g., a stuck or broken rudder of an aircraft). Therefore, adaptation is one way for realizing a self-healing system. Substantial research ...

We attach a feedback-control-loop infrastructure to an existing target system, to continually monitor and dynamically adapt its activities and performance. (This approach could also be applied to "new" systems, as an alternative to "building in" ...

Self-healing systems generally require reflective models of their own operation to determine what aspects of themselves they can change to effect repair. Architecture models are examples of rather simple models to which health information can be ...

This paper presents an aspect-oriented approach to dynamic adaptation. A systematic process for defining where, when, and how an adaptation is to be incorporated into an application is presented. Specifically, the paper presents a two-phase approach to ...

Ubiquitous computing services are a fast-growing and challenging class of self-healing systems that must adapt to constant failures and environmental changes. Writing robust ubiquitous computing code is difficult in current programming systems. The ...

In this paper, we identify an agent-based workflow system to mirror critical elements in large systems architectures. We propose the use of this light-weight agent-based service channel to complement existing systems. By pushing the adaptive smarts into ...

There is an increasing need for software systems to be able to adapt to changing conditions of resource variability, component malfunction and malicious intrusion. Such self-healing systems can prove extremely useful in situations where continuous ...

Distributed databases generally have strict consistency requirements on data replicas, meaning that they are not allowed to diverge outside of transaction boundaries. For certain applications, this is too pessimistic, and it is often better to trade off ...

Modern practical computing systems are much more complex than the simple programs on which we developed our models of dependability. These dependability models depend on precise specifications, but it is often impractical to obtain precise ...