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Self-adaptive utility-based web session management

Nicolas Poggi, Toni Moreno, Josep Lluis Berral, Ricard Gavaldà, Jordi Torres
2009 Computer Networks  
When server resources are exceeded, session-based admission control systems allow maintaining a high throughput in terms of properly finished sessions and QoS for a limited number of sessions; however,  ...  In the Internet, where millions of users are a click away from your site, being able to dynamically classify the workload in real time, and predict its short term behavior, is crucial for proper self-management  ...  For additional information about the authors, visit the Barcelona eDragon Research Group Web site [20].  ... 
doi:10.1016/j.comnet.2008.08.022 fatcat:4pqsg5mmgvdrdesxwndplhoxjq

Self-* overload control for distributed web systems [article]

Novella Bartolini, Giancarlo Bongiovanni, Simone Silvestri (Department of Computer Science University of Rome Sapienza, Italy)
2009 arXiv   pre-print
We ran extensive simulations under a wide range of operating conditions, showing that SOC rapidly adapts to time varying traffic and self-optimizes the resource utilization.  ...  This allows the system to self-configure a dynamic constraint on the rate of admitted sessions in order to respect service level agreements and maximize the resource utilization at the same time.  ...  Our proposal is oriented to the management of web based traffic, and for this reason provides admission control at session granularity.  ... 
arXiv:0802.2543v2 fatcat:syhjehugffcmrpgz2l5bdzgu4q

Self-* Overload Control for Distributed Web Systems

Novella Bartolini, Giancarlo Bongiovanni, Simone Silvestri
2008 IEEE International Workshop on Quality of Service, IWQoS  
We ran extensive simulations under a wide range of operating conditions, showing that SOC rapidly adapts to time varying traffic and self-optimizes the resource utilization.  ...  This allows the system to self-configure a dynamic constraint on the rate of admitted sessions in order to respect service level agreements and maximize the resource utilization at the same time.  ...  Our proposal is oriented to the management of web based traffic, and for this reason provides admission control at session granularity.  ... 
doi:10.1109/iwqos.2008.11 dblp:conf/iwqos/BartoliniBS08 fatcat:wzprlvkilrdqbc2gr7eyxd6hve

Efficacy and cost-effectiveness of a web-based and mobile stress-management intervention for employees: design of a randomized controlled trial

Elena Heber, David Daniel Ebert, Dirk Lehr, Stephanie Nobis, Matthias Berking, Heleen Riper
2013 BMC Public Health  
Efficacy and cost-effectiveness of a web-based and mobile stress-management intervention for employees: Design of a randomized controlled trial.  ...  Web-based interventions may overcome some of these problems yet the evidence in this field is scarce.  ...  As deficits in the ability to adaptively cope with difficult emotions are related to various mental health problems [41] , the usage of emotion regulation techniques in a low-threshold web-based stress-management  ... 
doi:10.1186/1471-2458-13-655 pmid:23855376 pmcid:PMC3717042 fatcat:7cvfpqyfhrgujgoybmfl43uzwu

Architecture-based self-protecting software systems

Eric Yuan, Sam Malek, Bradley Schmerl, David Garlan, Jeff Gennari
2013 Proceedings of the 9th international ACM Sigsoft conference on Quality of software architectures - QoSA '13  
Finally, we describe our ongoing work in realizing these patterns on top of Rainbow, an existing architecture-based adaptation framework.  ...  This has motivated the development of self-protecting software that is capable of detecting security threats and mitigating them through runtime adaptation techniques.  ...  DB Connector Legend Component Connector Web App Traffic Monitoring Event Adaptation Event Architecture Manager M A P E Figure 1: Znn Self-Adaptive Architecture Table 1: OWASP Top  ... 
doi:10.1145/2465478.2465479 dblp:conf/qosa/YuanMSGG13 fatcat:sbhb7vucvfe5plmyygyybkr3lu

Dynamic CPU provisioning for self-managed secure web applications in SMP hosting platforms

Jordi Guitart, David Carrera, Vicenç Beltran, Jordi Torres, Eduard Ayguadé
2008 Computer Networks  
mechanism avoids the server's performance degradation by dynamically limiting the number of new SSL connections accepted and preferentially serving resumed SSL connections (to maximize performance on session-based  ...  In this paper we propose an overload control strategy for secure web applications that brings together dynamic provisioning of platform resources and admission control based on secure socket layer (SSL  ...  Fig. 7 . 7 Number of sessions refused and timed out of the original Tomcat vs. self-managed Tomcat.  ... 
doi:10.1016/j.comnet.2007.12.009 fatcat:wb6m5u26jbey7ptjfqkrke5t4q

A Hybrid Web-Based and In-Person Self-Management Intervention Aimed at Preventing Acute to Chronic Pain Transition After Major Lower Extremity Trauma: Feasibility and Acceptability of iPACT-E-Trauma

Mélanie Bérubé, Céline Gélinas, Nancy Feeley, Géraldine Martorella, José Côté, G Yves Laflamme, Dominique M Rouleau, Manon Choinière
2018 JMIR Formative Research  
Therefore, we developed a hybrid, Web-based and in-person, self-management intervention to prevent acute to chronic pain transition after major lower extremity trauma (iPACT-E-Trauma).  ...  More than 80% of participants attended sessions and <20% did not apply self-management behaviors relevant to their condition, with the exception of deep breathing relaxation exercises which was not applied  ...  The authors received a grant from the Quebec Pain Research Network of FRQ-S (no reference number was provided) for the development of Soulage TAVIE Post-Trauma and preliminary testing in Web sessions.  ... 
doi:10.2196/10323 pmid:30684418 pmcid:PMC6334695 fatcat:sgtlyxjcj5eczhtvtb3chw4xgu

Auto-scaling Web Applications in Clouds: A Taxonomy and Survey [article]

Chenhao Qu, Rodrigo N. Calheiros, Rajkumar Buyya
2017 arXiv   pre-print
Moreover, based on the analysis, we propose new future directions that can be explored in this area.  ...  In this paper, we comprehensively analyze the challenges that remain in auto-scaling web applications in clouds and review the developments in this field.  ...  Self-adaptive Switching Beyond the utilization of a single self-adaptive module, some auto-scalers have employed a more adaptive framework, which we call self-adaptive switching.  ... 
arXiv:1609.09224v6 fatcat:dkk2ftpvpbcnvhcmc6lz2omwa4

A survey on performance management for internet applications

Jordi Guitart, Jordi Torres, Eduard Ayguadé
2010 Concurrency and Computation  
, service degradation, control theoretic approaches, works using queuing models, observation-based approaches that use runtime measurements, and overall approaches combining several mechanisms.  ...  This paper makes a survey on the different proposals in the literature for managing Internet applications' performance.  ...  This work describes an observation-based approach for self-managing web servers on shared architectures.  ... 
doi:10.1002/cpe.1470 fatcat:bxlovt3kf5hyvbu4hrjdpamvra

Online Prediction: Four Case Studies [chapter]

Katja Gilly, Fabian Brosig, Ramon Nou, Samuel Kounev, Carlos Juiz
2012 Resilience Assessment and Evaluation of Computing Systems  
This self adaptation of next resilient systems can be achieved by first online predicting how these situations would be by observation of the current environment.  ...  Thus, we survey online QoS adaptive models in several environments as grid environments, service-oriented architectures and ambient intelligence using different approaches based on queueing networks, model  ...  Concerning online performance prediction, in [11, 12] , the authors describe a framework using analytic performance models in the design of self-configurable and self-managing computer systems.  ... 
doi:10.1007/978-3-642-29032-9_9 fatcat:l5dgcni7jbehdd3zqeh2cywzh4

Self-∗ through self-learning: Overload control for distributed web systems

Novella Bartolini, Giancarlo Bongiovanni, Simone Silvestri
2009 Computer Networks  
Overload control is a challenging problem for web-based applications, which are often prone to unexpected surges of traffic.  ...  We contribute an original Self-* Overload Control (SOC) algorithm that self-configures a dynamic constraint on the rate of incoming new sessions in order to guarantee the fulfillment of the quality requirements  ...  Our proposal is oriented to the management of web-based traffic, and for this reason provides admission control at session granularity.  ... 
doi:10.1016/j.comnet.2008.11.015 fatcat:bthvl6nzszb3njro3ivs2qfpq4

A Survey of Quality of Service in Multi-tier Web Applications

2016 KSII Transactions on Internet and Information Systems  
When offering quality of service assurance with least resource usage costs, web service providers should adopt self-adaptive resource provisioning in each tier.  ...  Recently, a number of rule-and model-based approaches have been designed for dynamic resource management in virtualized data centers.  ...  Self-adaptive Neural Fuzzy for Percentile-based Delay Guarantee The authors [15] addressed the problem of self-provisioning of servers in multi-tier web applications running in a virtualized shared environment  ... 
doi:10.3837/tiis.2016.01.014 fatcat:olcm4bcazjh7havualoqbzcaga

Acute Stress Modulates Risk Taking in Financial Decision Making

Anthony J. Porcelli, Mauricio R. Delgado
2009 Psychological Science  
Raybourn, Applying simulation experience design methods to creating serious game-based adaptive training systems, Interacting with Computers, 19 (2007) , 206-214. abstract Adjustment Disorders (AD) are  ...  TEO will permit the creation and administration of assessment and treatment protocols to be completely personalized; each session will be adapted to the patient's needs.  ... 
doi:10.1111/j.1467-9280.2009.02288.x pmid:19207694 pmcid:PMC4882097 fatcat:74hsk4kkbreeznevybnf4cm4du

A Self-healing Web Server Using Differentiated Services [chapter]

Henri Naccache, Gerald C. Gannod, Kevin A. Gary
2006 Lecture Notes in Computer Science  
Web-based portals are a convenient and effective mechanism for integrating information from a wide variety of sources, including Web services.  ...  In this paper, we describe a framework for developing an autonomic self-healing portal system that relies on the notion of differentiated services (i.e., services that provide common behavior with variable  ...  Adaptive Content An approach to QoS management at the web server level is to adapt the content in order to minimize bandwidth usage.  ... 
doi:10.1007/11948148_17 fatcat:3fzc4xx2wnb77naitjoxhvwlvm

Effectiveness and User Acceptance of Online Chronic Disease Management Interventions in Rural and Remote Settings: Systematic Review and Narrative Synthesis

Craig Sinclair
2015 Clinical Medicine Insights: Therapeutics  
A total of 13 studies met the inclusion criteria; these were categorized into web-based self-management interventions (N = 3), interactive online groups (N = 6), and providermediated online interventions  ...  Increasing penetration of the Internet into rural and remote areas has enabled the delivery of online chronic disease management (CDM) interventions.  ...  Web-based self-management resources.  ... 
doi:10.4137/cmt.s18553 fatcat:cz52yisafvcrxg5lzywjykufpi
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