Anti-fragile ICT Systems by Kjell Jørgen Hole PDF

By Kjell Jørgen Hole

ISBN-10: 3319300687

ISBN-13: 9783319300689

ISBN-10: 3319300709

ISBN-13: 9783319300702

This publication introduces a unique method of the layout and operation of huge ICT platforms. It perspectives the technical ideas and their stakeholders as advanced adaptive structures and argues that conventional threat analyses can't expect all destiny incidents with significant affects. to prevent unacceptable occasions, it is crucial to set up and function anti-fragile ICT structures that restrict the effect of all incidents, and which study from small-impact incidents the right way to functionality more and more good in altering environments.

The ebook applies 4 layout rules and one operational precept to accomplish anti-fragility for various sessions of incidents. It discusses how structures can in achieving excessive availability, hinder malware epidemics, and discover anomalies. Analyses of Netflix’s media streaming answer, Norwegian telecom infrastructures, e-government systems, and Numenta’s anomaly detection software program exhibit that cloud computing is vital to attaining anti-fragility for periods of occasions with unfavorable impacts.

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Extra resources for Anti-fragile ICT Systems

Sample text

The terms dependency and connection are used in much the same way in this book. A module A is strongly connected with (or strongly dependent on) a module B if A’s functionality is badly affected when B misbehaves or fails. The module A is weakly connected (or weakly dependent) if A’s important functionality is preserved when B malfunctions or terminates. When modules are weakly connected, a change to a module should not necessitate changes to any other module. The modules must have well-defined interfaces and these interfaces must be the only way modules can interact with each other.

In general, the growing number of dependencies in increasingly complex systems causes incidents impacting stakeholders to become less frequent, because the systems become better at handling recurrent incidents over the normal operating range. However, at the same time, the impacts of nonrecurrent incidents are increasing due to the positive feedback loops propagating (combinations of) rare local events outside the normal operating range. 7 Understanding and Reducing Risk 21 In Taleb’s [9] terminology, while incidents affecting stakeholders are becoming less frequent, gray and black swans occur more often in ICT systems with tight internal integration as their complexity grows.

4]. Because the removal of single points of failure is a well-understood problem [47], this chapter first introduces four design principles that together isolate local failures before they propagate and cause systemic failures. It then presents one operational principle to quickly remove exploitable vulnerabilities. Finally, the chapter discusses how a systemic failure can occur in a complex adaptive system even when no parts fail, as well as the need to build models to understand such extreme global behavior.

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Anti-fragile ICT Systems by Kjell Jørgen Hole

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