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Auflistung nach Schlagwort "Availability"

1 - 3 von 3
  • Konferenzbeitrag
    A Modular Approach for Non-Distributed Crash Recovery for Streaming Systems
    (Datenbanksysteme für Business, Technologie und Web (BTW 2017), 2017) Brand, Michael; Grawunder, Marco; Appelrath, H.-Jürgen
    High availability and reliability are important aspects for streaming systems. State-of-the-art recovery techniques like active or passive standby use several nodes to fulfill these requirements. But not every processing task is done in a professional environment with resources for a distributed system (e.g. smart home). Additionally, even distributed streaming systems can benefit from reliable non-distributed crash recovery (NDCR) because it can help to restore the overall system state faster not only after a node failure but also after the roll-out of updates. In this paper, we present our research on NDCR for streaming systems and point out its possibilities and limitations. We propose a flexible and extensible framework in which small NDCR tasks can be combined to high-level NDCR classes with different degrees of fulfillment for completeness and correctness: at-most-once, at-least-once or exactly-once. Further, we offer a way to mark elements that may be incorrect or duplicated.
  • Konferenzbeitrag
    Parlay PAM in 3GPP's IP-multimedia subsystem
    (Kommunikation in Verteilten Systemen (KiVS), 2005) Klaus, Jens-Michael; Magedanz, Thomas
    The document will give a brief overview of the Presence and Availability -specification in general, protocols used in the IP Multimedia Subsystem - namely SIP and Diameter - and will show a possible mapping for PAM-methods to the underlying infrastructure. In addition it will describe the IMS infrastructure developed at Fraunhofer Fokus and the implementation of the PAM-server
  • Textdokument
    Towards a Smart Assistant for Enterprise Availability Management
    (Open Identity Summit 2017, 2017) Laufs, Uwe; Roßnagel, Heiko
    In today’s work environment, people are increasingly available because of the vast distribution of smartphones. This leads to a lack of real leisure time without being disturbed by phone calls or e-Mail concerning job issues. In the last few years, several large companies in Germany addressed this issue using more or less successful methods like switching off mail servers after working hours or deleting mails received during holidays [Fa14], [We14]. Tough, these methods seems to be either too strict or do not provide an accurate solution for the different needs of the different roles in a company. In project SANDRA, we aim at the development of a smart assistant in order to provide non-disturbed leisure time for employees. The assistant will both delay the delivery of mails based on the content (e.g. natural language processing, deep learning) and on additional information such as roles, holiday, or location. In addition, phone calls can be rejected by the assistant. The project also has a focus on privacy aspects and several legal aspects such as labour management regulations and data protection laws. The development will include enterprises for gathering of requirements, continuous testing and optimisation as well as for the evaluation. For the evaluation of the system, stress levels will be measured based on the heart frequencies of the test users with and without using the system over a longer period of time.