Autonomous Decentralized Multi-Layer Cache System to Low Latency User Push Web Services

Emerging rich interactive Web services require timeliness and high availability. These applications are usually characterized as high I/O intensive service model such as ecommerce services, medical sciences including healthcare and digital imaging. [1,3]. These applications require continuous operation, non-stop service system and timeliness to achieve high assurance to meet Service Level Agreement (SLA). SLA is the explicit requirement of the Quality of Service (QoS), such as reliability and timeliness. SLA requirement in the emerging applications on the Internet needs Autonomous Decentralized System (ADS) [8] characteristics [2,4].