1) The document describes a middleware architecture for instantiating and executing workflows at runtime based on quality of service constraints.
2) The middleware selects appropriate services for each workflow activity based on offers published to a registry and binds them to generate a concrete workflow execution plan.
3) Workflow execution is decentralized by distributing workflow instance information to participating services, which invoke each other to continue execution in a self-coordinated manner.
SCTP is a transport layer protocol that provides reliable transmission of data streams over connectionless networks. It supports multi-homing by allowing endpoints to connect over multiple IP addresses, allowing fault tolerance by switching connections if one path fails. SCTP establishes connections using a four-way handshake and supports ordered and unordered delivery of data chunks. It uses sequence numbers, acknowledgments, and retransmissions to ensure reliable and error-free data transfer. Flow control is implemented using a receiver window and congestion control uses mechanisms similar to TCP.
Abstract - The Transmission Control Protocol (TCP) is
connection oriented, reliable and end-to-end protocol that support
flow and congestion control, with the evolution and rapid growth
of the internet and emergence of internet of things IoT, flow and
congestion have clear impact in the network performance. In this
paper we study congestion control mechanisms Tahoe, Reno,
Newreno, SACK and Vegas, which are introduced to control
network utilization and increase throughput, in the performance
evaluation we evaluate the performance metrics such as
throughput, packets loss, delivery and reveals impact of the cwnd.
Showing that SACK had done better performance in terms of
numbers of packets sent, throughput and delivery ratio than
Newreno, Vegas shows the best performance of all of them.
Abstract
The rapid growth in the Internet of Things (IoTs)
has change our life to be more intelligent and smart,
the development in the Wireless Sensors Networks
(WSNs), besides the wide use of the embedded devices
in different area like industry, home automation,
transport, agriculture and health care, which was led
the Routing Over Low-power and Lossy-network
(ROLL) working group to introduce the IPv6 Routing
Protocol for Low-Power and Lossy Networks (RPL),
therein the RPL nodes have organized topology as a
Directed Acyclic Graph (DAG) and terminated at one
root to form the Destination Oriented DAGs
(DODAGs). In this paper by using InstantContiki3.0
and CoojaGUI we analyze the DODAG formations,
the RPL control messages that are send downward
and upward routes to construct and maintain
DODAG and the Rank computation by Objective
Function (OF) for inconsistency and loop detection,
also we evaluate the performance of the RPL based
on the Expected Transmission Count (ETX) OF that
enable RPL to select and optimize routes within RPL
instance, as well as we evaluate the following metrics:
The ETX Reliability Object (ETX), Radio Duty Cycle
(RDC), energy consumption, the received packets by
the motes and neighbor count. The simulation results
show that the RPL control messages flow in consistent
manner, the DODAG root able to connect to all of the
neighbor motes, also Rank illustration shows no loops
and DODAG topology consistent, as well as the ETX
can essentially take control over DODAG formations
and it has an effects in the RDC ratio, furthermore
most of the motes show reasonable low power
consumption, also the motes show acceptable number
of the received packets.
Abstract— Internet of things (IoT) is a new networks paradigm,
that billions of internet things can be connected at anytime and
anyplace, and it’s expected to include billions of smart devices,
these devices characterized by small memory, low transfer rate
and low energy, internet protocol version 6 (IPv6) it was
introduced to offer huge address space, however it doesn’t
compatible with capabilities of the constrained device, therefore
IPv6 over low power Wireless Personal Area network
(6LoWPAN) adaptation layer was introduced to carry IPv6
datagram over constrained links, in this paper, we first provide
intensive analysis of 6LoWPAN specifications that includes IPv6
encapsulation, frame format, 6LoWPAN header compression,
fragmentation of the payload datagram and encoding of user
datagram protocol UDP, in addition to the implementation of the
6LoWPAN in the NS-3 using different payload size, then we
evaluate the following metrics throughput, packets loss, delay
and jitter, the results showed that the fragmentation effects the
network throughput and increase the delay and the number of
lost packets, moreover, when payload fit within a single frame the
network show better performance , there are no packets lost as
well as minimum values of the delay and the jitter, and in the
two cases 6LoWPAN shows reasonable packets delivery ratio.
The document discusses protocols and architectures for distributed data center networks. It proposes a solution for virtual machine migration that separates the virtual machine's location from its identifier. When a virtual machine migrates from one data center site to another, the new site updates the machine's location in a mapping database. Notifications are then sent to clients to direct traffic to the new location, avoiding triangular routing and providing seamless mobility during migration. The document evaluates several networking protocols for distributed data centers based on factors like overhead, deployability, and support for mobility. It also describes an international test bed with sites in multiple countries for validating the proposed VM migration approach.
This document discusses the role of European Technology Platforms (ETPs) in shaping the future of the Internet. It notes that ETPs like NESSI focus on software and services, NEM focuses on content, and others focus on communications, satellites, and more. The document states that ETPs will play a key role in the future Internet by delivering end-to-end experiences to users, providing underlying technologies and research results, and ensuring coherence and sustainability of research projects. ETPs are described as important communities and convergence points that can contribute to both Internet research and the adoption of new technologies.
The document describes the architecture for building a JAX-WS web service that calculates order subtotals using JBoss Drools and Apache jUDDI integration. The proposed solution includes major components like a business rule engine (BRE) to house rules for calculations, a service registry for discovery, and connectors. The requirements involve calculating order subtotals based on items, taxes, discounts, and shipping. The architecture is designed around loose coupling, with interfaces, canonical definitions, and externalization of business rules and data formats.
Discussion on the new features of the Client Object Model (Client OM) in SharePoint 2010.
Presented at SharePoint Saturday Richmond 11/18/2009
Presented at SharePoint Saturday Virginia Beach 1/13/2010
Presented at SharePoint Saturday Boston 2/27/2009
SCTP is a transport layer protocol that provides reliable transmission of data streams over connectionless networks. It supports multi-homing by allowing endpoints to connect over multiple IP addresses, allowing fault tolerance by switching connections if one path fails. SCTP establishes connections using a four-way handshake and supports ordered and unordered delivery of data chunks. It uses sequence numbers, acknowledgments, and retransmissions to ensure reliable and error-free data transfer. Flow control is implemented using a receiver window and congestion control uses mechanisms similar to TCP.
Abstract - The Transmission Control Protocol (TCP) is
connection oriented, reliable and end-to-end protocol that support
flow and congestion control, with the evolution and rapid growth
of the internet and emergence of internet of things IoT, flow and
congestion have clear impact in the network performance. In this
paper we study congestion control mechanisms Tahoe, Reno,
Newreno, SACK and Vegas, which are introduced to control
network utilization and increase throughput, in the performance
evaluation we evaluate the performance metrics such as
throughput, packets loss, delivery and reveals impact of the cwnd.
Showing that SACK had done better performance in terms of
numbers of packets sent, throughput and delivery ratio than
Newreno, Vegas shows the best performance of all of them.
Abstract
The rapid growth in the Internet of Things (IoTs)
has change our life to be more intelligent and smart,
the development in the Wireless Sensors Networks
(WSNs), besides the wide use of the embedded devices
in different area like industry, home automation,
transport, agriculture and health care, which was led
the Routing Over Low-power and Lossy-network
(ROLL) working group to introduce the IPv6 Routing
Protocol for Low-Power and Lossy Networks (RPL),
therein the RPL nodes have organized topology as a
Directed Acyclic Graph (DAG) and terminated at one
root to form the Destination Oriented DAGs
(DODAGs). In this paper by using InstantContiki3.0
and CoojaGUI we analyze the DODAG formations,
the RPL control messages that are send downward
and upward routes to construct and maintain
DODAG and the Rank computation by Objective
Function (OF) for inconsistency and loop detection,
also we evaluate the performance of the RPL based
on the Expected Transmission Count (ETX) OF that
enable RPL to select and optimize routes within RPL
instance, as well as we evaluate the following metrics:
The ETX Reliability Object (ETX), Radio Duty Cycle
(RDC), energy consumption, the received packets by
the motes and neighbor count. The simulation results
show that the RPL control messages flow in consistent
manner, the DODAG root able to connect to all of the
neighbor motes, also Rank illustration shows no loops
and DODAG topology consistent, as well as the ETX
can essentially take control over DODAG formations
and it has an effects in the RDC ratio, furthermore
most of the motes show reasonable low power
consumption, also the motes show acceptable number
of the received packets.
Abstract— Internet of things (IoT) is a new networks paradigm,
that billions of internet things can be connected at anytime and
anyplace, and it’s expected to include billions of smart devices,
these devices characterized by small memory, low transfer rate
and low energy, internet protocol version 6 (IPv6) it was
introduced to offer huge address space, however it doesn’t
compatible with capabilities of the constrained device, therefore
IPv6 over low power Wireless Personal Area network
(6LoWPAN) adaptation layer was introduced to carry IPv6
datagram over constrained links, in this paper, we first provide
intensive analysis of 6LoWPAN specifications that includes IPv6
encapsulation, frame format, 6LoWPAN header compression,
fragmentation of the payload datagram and encoding of user
datagram protocol UDP, in addition to the implementation of the
6LoWPAN in the NS-3 using different payload size, then we
evaluate the following metrics throughput, packets loss, delay
and jitter, the results showed that the fragmentation effects the
network throughput and increase the delay and the number of
lost packets, moreover, when payload fit within a single frame the
network show better performance , there are no packets lost as
well as minimum values of the delay and the jitter, and in the
two cases 6LoWPAN shows reasonable packets delivery ratio.
The document discusses protocols and architectures for distributed data center networks. It proposes a solution for virtual machine migration that separates the virtual machine's location from its identifier. When a virtual machine migrates from one data center site to another, the new site updates the machine's location in a mapping database. Notifications are then sent to clients to direct traffic to the new location, avoiding triangular routing and providing seamless mobility during migration. The document evaluates several networking protocols for distributed data centers based on factors like overhead, deployability, and support for mobility. It also describes an international test bed with sites in multiple countries for validating the proposed VM migration approach.
This document discusses the role of European Technology Platforms (ETPs) in shaping the future of the Internet. It notes that ETPs like NESSI focus on software and services, NEM focuses on content, and others focus on communications, satellites, and more. The document states that ETPs will play a key role in the future Internet by delivering end-to-end experiences to users, providing underlying technologies and research results, and ensuring coherence and sustainability of research projects. ETPs are described as important communities and convergence points that can contribute to both Internet research and the adoption of new technologies.
The document describes the architecture for building a JAX-WS web service that calculates order subtotals using JBoss Drools and Apache jUDDI integration. The proposed solution includes major components like a business rule engine (BRE) to house rules for calculations, a service registry for discovery, and connectors. The requirements involve calculating order subtotals based on items, taxes, discounts, and shipping. The architecture is designed around loose coupling, with interfaces, canonical definitions, and externalization of business rules and data formats.
Discussion on the new features of the Client Object Model (Client OM) in SharePoint 2010.
Presented at SharePoint Saturday Richmond 11/18/2009
Presented at SharePoint Saturday Virginia Beach 1/13/2010
Presented at SharePoint Saturday Boston 2/27/2009
Performance Evaluation of Web Services In Linux On MulticoreCSCJournals
Contemporary Business requires the ability to seamlessly exchange information between internal
business units, customers, and partner, is vital for success. Most organizations employ a variety of
different applications to store and exchange data in dissimilar way and therefore cannot “communicate” to
one another productively [1]. Service Oriented Architecture (SOA) components provide services to other
components via communication protocols typically over a network [2].The technologies like DCOM, RMI,
COBRA, Web Services etc. are developed using SOA, which contributed best to fulfill requirements to
some extent, but components result from these technologies are mostly either language specific or
platform specific,[3]. The services or components developed for one platform may not be able to
communicate and reusable in other platform, as they are mostly language specific or platform specific.
“World Wide Web Consortium (W3C) International community to develop web standards” issued WS-*
specifications for programming language vendors for Web services, which confirms a standard means of
interoperating between different software applications running on a variety of platforms or frameworks
[4][5]. This paper tests web services performance gain along with interoperability, reusability by using
“NAS Parallel Benchmarks (NPB)” set of program [6] developed by NASA Advanced Supercomputing
Division to evaluate the performance of supercomputers.
The document discusses Acision's SDK for building real-time communication applications. It provides an overview of Acision, examples of using the SDK for Android, iOS and JavaScript, and how the SDK integrates with authentication providers. The SDK provides libraries for messaging, presence, WebRTC calls and more through a single API.
Web-RTC Based Conferencing Application Onkar Kadam
The document outlines a presentation on WebRTC-based video conferencing. It introduces the team members and provides an agenda that includes an introduction to WebRTC architecture, main tasks like acquiring audio/video and peer connections, signaling with STUN and ICE, using Firebase for presence status, challenges faced and conclusions. Features demonstrated include multiparty video/voice conferencing over the web using WebRTC APIs, WebSocket and Firebase.
Building Event Driven (Micro)services with Apache KafkaGuido Schmutz
What is a Microservices architecture and how does it differ from a Service-Oriented Architecture? Should you use traditional REST APIs to bind services together? Or is it better to use a richer, more loosely-coupled protocol? This talk will start with quick recap of how we created systems over the past 20 years and how different architectures evolved from it. The talk will show how we piece services together in event driven systems, how we use a distributed log (event hub) to create a central, persistent history of events and what benefits we achieve from doing so.
Apache Kafka is a perfect match for building such an asynchronous, loosely-coupled event-driven backbone. Events trigger processing logic, which can be implemented in a more traditional as well as in a stream processing fashion. The talk will show the difference between a request-driven and event-driven communication and show when to use which. It highlights how the modern stream processing systems can be used to hold state both internally as well as in a database and how this state can be used to further increase independence of other services, the primary goal of a Microservices architecture.
Project implements a complex intra-networking system of various devices and modules working on IPv4 and IPv6 protocols providing various services like DNS, DHCP, HTTP, FTP, and SMTP. Information is routed among various client on the network with the use of protocols RIP, IMAP and OSPF. Project comprises of sub-netting, LAN switching and VLAN techniques to manage the number of hosts present in the network communicating with least network collision and congestion.
TechDays 2010 Portugal - WCF RIA Services 16x9Nuno Godinho
This document provides an overview of WCF RIA Services, including:
- Common challenges with n-tier application development that RIA Services addresses like validation across tiers and code sharing.
- The value propositions of RIA Services in simplifying application development across tiers and providing tools to build applications together across tiers.
- An example of how a sample line-of-business application can be developed with WCF RIA Services with the client as an extension of the server and a single logical application.
Oracle service bus (osb) for the busy itarjunkrisshh
This document provides an overview and introduction to Oracle Service Bus 11g. It discusses the positioning of a service bus compared to EAI and BPM. It also summarizes the core features of OSB including loose coupling, location transparency, dynamic routing, schema transformation, and protocol mediation. The document reviews OSB administration interfaces and provides examples of monitoring capabilities in OSB.
The document describes the Network Monitoring and Performance Verification (PVM) service. PVM provides automated testing and monitoring of key performance indicators for multiple network services simultaneously. It can localize performance degradations to specific network segments. PVM is implemented using open source tools and provides dashboards and reports on service quality. The service benefits network operators and users by verifying service quality. It is integrated with other network management systems using standard interfaces.
A Comparative Review on Fault Tolerance methods and models in Cloud ComputingIRJET Journal
This document discusses fault tolerance methods in cloud computing. It begins with an introduction to cloud computing and its characteristics like on-demand resources, multi-tenancy, and decreased costs. It then discusses fault tolerance as being essential for guaranteed availability and reliability of critical applications in the cloud. The document reviews different fault tolerance techniques including reactive fault tolerance policies using replication, checkpointing, and job migration as well as proactive policies using software rejuvenation and preemptive migration. Related work on fault tolerance models and frameworks is also summarized.
WebRTC provides a standardized profile for real-time communication that enables interoperability between browsers without plugins. It defines client-side APIs for audio and video calling as well as other real-time communication capabilities. The WebRTC architecture includes the API, codecs, transport mechanisms like STUN and TURN, and network I/O that allow real-time apps to run directly in browsers. Signaling is required to establish connections between users, and the standardization of WebRTC aims to improve interoperability compared to proprietary solutions. However, interoperability is not always in the best interests of businesses. Ultimately, the API is more important than the underlying protocols it uses.
PLNOG14: Service orchestration in provider network, Tail-f - Przemysław BorekPROIDEA
Przemysław Borek - Cisco Systems
Language: English
Service orchestration in provider network, Tail-f
Register to the next PLNOG edition today: krakow.plnog.pl
This document provides an agenda for a workshop on SharePoint 2013 workflows. It discusses the SharePoint 2013 workflow architecture including Workflow Manager, SharePoint Designer workflows, and Visual Studio workflows. It also highlights new features for workflows in SharePoint 2013 such as improved interoperability and the ability to create workflows using Visual Studio.
The document discusses service composition technology for telecom services and internet services. It describes two models of service composition - the in-out model where services execute within a telecom operator's service delivery platform and access internet services, and the out-in model where services execute outside the platform and access services provided by the platform. It compares the two models and identifies issues around things like identity management, programming skills required, and service activation methods. The document then proposes a convergent execution platform that can support both models of service composition using service proxies and other features to efficiently execute composite services both inside and outside a service delivery platform.
The document discusses software architecture and design topics such as moving from n-tier to service-oriented architectures (SOA). It describes how mORMot implements an SOA using interface-based services with RESTful APIs. Services are defined through interfaces and implemented on the server, then published and accessed by clients. This allows for loosely coupled and platform-independent services that can be composed together. The document also covers logical vs physical views, service lifetimes, security, analytics, and callbacks over WebSockets.
The document discusses project management techniques including PERT and CPM. It explains that PERT and CPM are used to plan, schedule, and coordinate large projects by graphically displaying project activities, estimating project duration, identifying critical activities, and determining float. The framework involves defining activities and relationships, drawing network diagrams, estimating activity times, computing the critical path, and using the network to plan and control the project. Key terms and how to draw network diagrams are also covered.
Shared Services Canada's transformation aims to streamline IT infrastructure across the Canadian government. Key elements include consolidating data centers, networks, and security services. The transformation is an ongoing process with milestones over several years, including establishing additional data centers, migrating departments to shared telecom and workplace services, and improving cybersecurity capabilities through releases of a new Security Operations Centre. Maintaining focus on the transformation plan and ensuring all necessary capabilities are in place will be important for successful implementation.
Application of SHAPE Technologies in Production and Process OptimizationBrian Elvesæter
B. Elvesæter, E. Landre, and A.-J. Berre, "Application of SHAPE Technologies in Production and Process Optimization", paper presentation at IESA 2010 Workshop “Use of MDI/SOA concepts in Industry”, Coventry, United Kingdom, 13 April 2010.
An overview of project Skyfall. A globally distributed fault tolerant event consumption framework used by AddThis.com to consume billions of events per day.
Azure paa s v2 – microservices, microsoft (azure) service fabric, .apps and o...Tomasz Kopacz
How to build architecture based on microservices. What is Azure Service Fabric, and how this technology help us to build stateless and statefull services. How to start with actor-based programming. How to use also *.Apps and containers in microservices world. And of course – how to deal with many, many objects and components in our application.
Level: 300 (ok – 200, because I will explain basic concepts – but on the other hands those topic (especially around actors) are quite complicated)
From: http://net.developerdays.pl/
The document discusses the role of European Technology Platforms (ETPs) in shaping the future internet. It notes that ETPs represent key industrial sectors like software/services, content, communications, and nanoelectronics. The ETPs have historically focused on their individual sectors but are now working together synergistically on converging topics like the future internet. The future internet serves as both a major application area for ETP research and an opportunity for ETPs to access users. ETPs are well-positioned to contribute to the future internet both individually through their separate work, and collectively by facilitating coherence across projects.
Massonet Philippe Panel - Security in the clouds: An Academic PerspectiveServiceWave 2010
The document discusses security challenges in cloud computing from an academic perspective. It notes that cloud providers are offering different security levels and obtaining certifications to improve trust. However, key challenges remain around loss of user governance, compliance, managing risks from jurisdiction changes, and lack of transparency. The responsibilities between users and providers are also still incompletely defined regarding accountability and control. The document suggests research directions could improve trust by giving users more control and verifying the provider's isolation of virtual infrastructure.
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Performance Evaluation of Web Services In Linux On MulticoreCSCJournals
Contemporary Business requires the ability to seamlessly exchange information between internal
business units, customers, and partner, is vital for success. Most organizations employ a variety of
different applications to store and exchange data in dissimilar way and therefore cannot “communicate” to
one another productively [1]. Service Oriented Architecture (SOA) components provide services to other
components via communication protocols typically over a network [2].The technologies like DCOM, RMI,
COBRA, Web Services etc. are developed using SOA, which contributed best to fulfill requirements to
some extent, but components result from these technologies are mostly either language specific or
platform specific,[3]. The services or components developed for one platform may not be able to
communicate and reusable in other platform, as they are mostly language specific or platform specific.
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Division to evaluate the performance of supercomputers.
The document discusses Acision's SDK for building real-time communication applications. It provides an overview of Acision, examples of using the SDK for Android, iOS and JavaScript, and how the SDK integrates with authentication providers. The SDK provides libraries for messaging, presence, WebRTC calls and more through a single API.
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Building Event Driven (Micro)services with Apache KafkaGuido Schmutz
What is a Microservices architecture and how does it differ from a Service-Oriented Architecture? Should you use traditional REST APIs to bind services together? Or is it better to use a richer, more loosely-coupled protocol? This talk will start with quick recap of how we created systems over the past 20 years and how different architectures evolved from it. The talk will show how we piece services together in event driven systems, how we use a distributed log (event hub) to create a central, persistent history of events and what benefits we achieve from doing so.
Apache Kafka is a perfect match for building such an asynchronous, loosely-coupled event-driven backbone. Events trigger processing logic, which can be implemented in a more traditional as well as in a stream processing fashion. The talk will show the difference between a request-driven and event-driven communication and show when to use which. It highlights how the modern stream processing systems can be used to hold state both internally as well as in a database and how this state can be used to further increase independence of other services, the primary goal of a Microservices architecture.
Project implements a complex intra-networking system of various devices and modules working on IPv4 and IPv6 protocols providing various services like DNS, DHCP, HTTP, FTP, and SMTP. Information is routed among various client on the network with the use of protocols RIP, IMAP and OSPF. Project comprises of sub-netting, LAN switching and VLAN techniques to manage the number of hosts present in the network communicating with least network collision and congestion.
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Register to the next PLNOG edition today: krakow.plnog.pl
This document provides an agenda for a workshop on SharePoint 2013 workflows. It discusses the SharePoint 2013 workflow architecture including Workflow Manager, SharePoint Designer workflows, and Visual Studio workflows. It also highlights new features for workflows in SharePoint 2013 such as improved interoperability and the ability to create workflows using Visual Studio.
The document discusses service composition technology for telecom services and internet services. It describes two models of service composition - the in-out model where services execute within a telecom operator's service delivery platform and access internet services, and the out-in model where services execute outside the platform and access services provided by the platform. It compares the two models and identifies issues around things like identity management, programming skills required, and service activation methods. The document then proposes a convergent execution platform that can support both models of service composition using service proxies and other features to efficiently execute composite services both inside and outside a service delivery platform.
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Application of SHAPE Technologies in Production and Process OptimizationBrian Elvesæter
B. Elvesæter, E. Landre, and A.-J. Berre, "Application of SHAPE Technologies in Production and Process Optimization", paper presentation at IESA 2010 Workshop “Use of MDI/SOA concepts in Industry”, Coventry, United Kingdom, 13 April 2010.
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Level: 300 (ok – 200, because I will explain basic concepts – but on the other hands those topic (especially around actors) are quite complicated)
From: http://net.developerdays.pl/
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The document discusses security challenges in cloud computing from an academic perspective. It notes that cloud providers are offering different security levels and obtaining certifications to improve trust. However, key challenges remain around loss of user governance, compliance, managing risks from jurisdiction changes, and lack of transparency. The responsibilities between users and providers are also still incompletely defined regarding accountability and control. The document suggests research directions could improve trust by giving users more control and verifying the provider's isolation of virtual infrastructure.
Usman Wajid: Service-based Application Development by Ordinary End Users and ...ServiceWave 2010
The document summarizes the findings of focus groups conducted with ordinary end users and IT professionals regarding their perceptions of service-based application development. The focus groups aimed to understand users' mental models of software services and gauge the likelihood of non-technical end users composing applications from available services. Key findings included higher experience levels with development among IT professionals; interest but also risks like security and technical difficulties perceived by both groups; and recommendations to promote, simplify, guide and secure service composition to encourage uptake by ordinary end users.
D. Meiländer, S. Gorlatch, C. Cappiello,V. Mazza, R. Kazhamiakin, and A. Buc...ServiceWave 2010
D. Meiländer, S. Gorlatch, C. Cappiello,V. Mazza, R. Kazhamiakin, and A. Bucchiarone: Using a Lifecycle Model for Adaptable Interactive Distributed Applications
Maryam Razavian: A Frame of Reference for SOA MigrationServiceWave 2010
This document summarizes research on approaches to migrating legacy systems to service-oriented architectures (SOAs). It conducted a systematic literature review that identified 8 families of SOA migration approaches. It also conducted interviews with industry practitioners that found companies primarily used "bowl-shaped" migration approaches focused on integration and reuse. The research provides a framework to categorize SOA migration approaches found in both academic literature and industry practice.
Security in the Clouds Panel Chair: Mike SurridgeServiceWave 2010
This document discusses security issues related to cloud computing. It outlines both the pros and cons of cloud-based information and communication technology. The pros include low upfront costs, low maintenance costs, and scalability. However, there are also legal, financial, societal and technical security risks to consider. These include issues around authentication, access control, accountability, and isolation of users. The document then describes the architecture of the Edutain@Grid project, which had four layers: the client layer for single sign-on, the business layer for trust and security federations, the management layer for access control and billing, and the real-time layer for secure application protocols. Finally, it lists the panelists who will discuss challenges
Martine Lapierre - Security in Cloud computing: sharing more than resourcesServiceWave 2010
Cloud computing provides opportunities but also implies a loss of control over data and infrastructure. When choosing a cloud offering, considerations include the provider's reputation for protecting confidentiality and their ability to prove no loss of control. Sensitive healthcare data processed in the cloud must satisfy strict regulatory requirements regarding data protection, access controls, and ensuring data does not leave its country of origin. Both customers and providers face legal and security challenges in ensuring compliance with privacy laws and protecting against threats in shared cloud environments.
Andreas Wolke: TwoSpot. A Cloud Platform for Scaling out Web Applications dyn...ServiceWave 2010
TwoSpot is a cloud platform that allows for the automated horizontal scaling of web applications. It provides dynamic scaling of applications across multiple servers with a small resource footprint using existing software standards and multiple programming languages. The document discusses TwoSpot's architecture, how it starts and distributes application instances, and how it scales applications out or in based on load.
Scott Kirkpatrick (Hebrew University): OneLab: Federation and TestbedsServiceWave 2010
The document discusses federation of internet testbeds to enable testing across different geographic locations, technologies, and networks. It proposes extending federation support through middleware across control planes and experimental planes to facilitate resource discovery, monitoring, and data sharing. Several existing federated testbeds and measurement tools are described that have been used for topics like internet topology mapping, capacity measurements in Europe, and testing non-IP autonomous networks.
Jacques Magen (FIRESTATION): Testbeds for Service Deployment. FIRESTATION’s v...ServiceWave 2010
FIRESTATION aims to coordinate and support stakeholders involved in the Future Internet Research and Experimentation (FIRE) initiative. It establishes an Architecture Board to bring together representatives from FIRE projects to coordinate common actions and developments. This includes working towards a high-level federation model for FIRE facilities, developing a common FIRE portal, and addressing sustainability and business models. FIRESTATION also serves as an entry point for external relations and provides support for other coordination actions like FIREBALL and PARADISO2.
This document discusses testbeds for service deployments and summarizes a panel discussion on the topic. The panel motivation was that fast prototyping, testing, and experimentally driven research are key to speeding up and leveraging new application and service deployments. Testbeds can offer existing solutions and determine if they are usable and adequate. Some issues discussed were matching or mismatching between needs, requirements, and available solutions both open and commercial. Questions addressed why common open activities and solutions may need to be developed for service platforms, what concrete form an offering could take, and how academic and industrial objectives could be reconciled along with business models and sustainability.
Martine Lapierre - Security & Privacy trends for Urban & transport applications ServiceWave 2010
This document summarizes a presentation on security and privacy trends for urban transportation applications. It discusses future applications enabled by technologies like universal geo-location and mobile communications. An example application is described that provides multi-modal transportation routing and updates in real-time. Key security and privacy issues are identified, such as location privacy, customer data privacy and integrity, payment integrity, and ensuring safety. Content-driven security approaches are proposed that tag data with security and privacy metadata to control usage and ensure compliance. The document also discusses how the FI PPP project can help deliver generic security services to enable smart applications and generate trust.
Mário Campolargo - Services and clouds as cornerstones of the Digital AgendaServiceWave 2010
Mário Campolargo - Services and clouds as cornerstones of the Digital Agenda
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Dr. Thierry Priol, INRIA, ServiceWave General Chair - Opening Welcome (edit)
Tags Description Dr. Thierry Priol, INRIA, ServiceWave General Chair - Opening Welcome Service Wave 2010 - Tuesday Dec 14th 2010
The document summarizes several demos presented at a FIRE project demo session on December 15, 2010. It describes demos of:
1) A Self-NET demo of cognitive network management techniques for optimizing capacity and coverage of wireless networks.
2) An ECODE demo of using machine learning to enhance link state routing protocols.
3) What the OneLab testbed federation offers, including access to the PlanetLab Europe, NITOS wireless, and ETOMIC measurement testbeds.
Demonstration Evening ServiceWave 2010, FIA and FIRE
Chen Wang, Pazat, Di Napoli, Giordano: A Chemical Based Middleware for Workflow Instantiation and Execution
1. ServiceWave 2010 A Chemical Based Middleware for Workflow Instantiation and Execution Chen WANG1, Jean-Louis PAZAT1, Claudia DI NAPOLI2, Maurizio GIORDANO2 1Université Européenne de Bretagne, INSA/INRIA/IRISA, F-35708 Rennes, France 2Istituto di Cibernetica CNR, Via Campi Flegrei 34, 80078 Pozzuoli, Naples, Italy 15th December 2010 @ Gent, Belgium ServiceWave 2010 13-15 December 2010
13. A way to realize the technical aspects of SOA;
14. Definition (W3C): a software system designed to support interoperable machine-to-machine interaction over a network.
15. A Web Services architecture then requires three fundamental operations: publish, find, and bind. Service providers publish services to a service broker. Service requesters find required services using a service broker and bind to them. These ideas are shown in the following figure.Bind Web services architecture. 13-15 December 2010 ServiceWave 2010
27. Global Architecture Middleware Layer Abstract Business Process Registry AS1 AS3 Workflow Instantiation AS2 Abstract Service Web Service Grid Service Grid Service Concrete Service Business Process 13-15 December 2010 ServiceWave 2010
29. Middleware Architecture Middleware Layer Web Service Execution Level Registry Publish Information of all offers provided by Abstract Services Monitoring/Rating Module Workflow Instantiation The 3rd party component, exposed as a service, to monitor the execution process of a workflow. - Input: an Abstract workflow - Output: a Concrete Workflow (Execution Plan) Web Service Representation Level Abstract WSn Abstract WS1 … … Abstract Business Processm Abstract Business Process1 WSn_Invoker WS1_Invoker Definition of Abstract WF Definition of Abstract WF … Concrete WS1 Concrete WSn 13-15 December 2010 ServiceWave 2010
49. Global Non-functional parameters can be aggregated (aggregated price can be added and the aggregated availability can be multiplied)
50. The same abstract workflow + different global QoS Constraints = different concrete workflow (Instantiation process: coming slide) Abstract Business Processm Definition of Abstract WF 13-15 December 2010 ServiceWave 2010
66. “inter_flight_reservation” offer is provided by “Air France” for reserving international airline tickets, the average response time is 5 seconds, the availability is 99%.13-15 December 2010 ServiceWave 2010
68. Web Service Invocation Middleware Layer Service Invocation Message (with parameters) Abstract BP (SPA) P Q s1 s2 s3 s4 s5 13-15 December 2010 ServiceWave 2010
69. Forward Abstract WF to Instantiation Middleware Layer Workflow Instantiation Abstract BP (SPA) Send Workflow P Q s1 s1 s2 s2 Execution time: within 8 time units s3 s3 Complete Instantiation s4 s4 s5 s5 13-15 December 2010 ServiceWave 2010
70. Look For Appropriate Offers Middleware Layer Workflow Instantiation Demand Offers I look for the service providers that deliver the functionalities s1, s2, s3, s4 and s5. Registry Publish Information of all Abstract Web Services Abstract BP (SPA) P Q s1 s1 s2 s2 Execution time: within 8 time units s3 s3 Complete Instantiation s4 s4 s5 s5 13-15 December 2010 ServiceWave 2010
71. Return Qualified Offers Middleware Layer Workflow Instantiation Qualified Offers Registry Publish Information of all Abstract Web Services Abstract BP (SPA) P Q s1 s1 s2 s2 Execution time: within 8 time units s3 s3 Complete Instantiation s4 s4 s5 s5 13-15 December 2010 ServiceWave 2010
72. Associate Offers to Activities Middleware Layer Workflow Instantiation (0,3) (0,3) (0,2) (1,5) (2,4) (1,6) (4,5) Registry (4,6) (5,7) Publish Information of all Abstract Web Services (6,7) (3,8) (5,9) Abstract BP (SPA) P Q s1 s1 s2 s2 Execution time: within 8 time units s3 s3 Complete Instantiation s4 s4 s5 s5 13-15 December 2010 ServiceWave 2010
73. Non-functional Property Middleware Layer Workflow Instantiation (0,3) (0,3) (0,2) (1,5) (2,4) (1,6) (4,5) Registry (4,6) (5,7) Publish Information of all Abstract Web Services (6,7) (3,8) (5,9) Abstract BP (SPA) P Q s1 s1 s2 s2 Execution time: within 8 time units s3 s3 Complete Instantiation s4 s4 s5 s5 13-15 December 2010 ServiceWave 2010
74. Workflow Fragment Middleware Layer Workflow Instantiation (0,3) (0,3) (0,2) (2,4) (1,5) (1,6) (4,5) Registry (4,6) (5,7) Publish Information of all Abstract Web Services (6,7) (3,8) (5,9) Abstract BP (SPA) P Q s1 s1 s2 s2 Execution time: within 8 time units s3 s3 Complete Instantiation s4 s4 s5 s5 13-15 December 2010 ServiceWave 2010
75. QoS Constraints Middleware Layer Workflow Instantiation (0,3) (0,3) (0,2) (2,4) (1,5) (1,6) (4,5) Registry (4,6) (5,7) Publish Information of all Abstract Web Services (6,7) (3,8) (5,9) Abstract BP (SPA) P Q Constraint: The execution duration of two consecutive nodes has no Intersection. s1 s1 s2 s2 Execution time: within 8 time units s3 s3 Complete Instantiation s4 s4 s5 s5 13-15 December 2010 ServiceWave 2010
76. Branch Instantiation Middleware Layer Workflow Instantiation (0,3) (0,3) (0,2) (1,6) (4,5) Registry Publish Information of all Abstract Web Services (6,7) (3,8) (5,9) Abstract BP (SPA) (2,6) (1,7) P Q Constraint: The execution duration of two consecutive nodes has no Intersection. s1 s1 s2 s2 Execution time: within 8 time units s3 s3 Complete Instantiation s4 s4 s5 s5 13-15 December 2010 ServiceWave 2010
77. Connect fragments Middleware Layer Workflow Instantiation (0,3) (0,3) (0,7) (1,6) Registry Publish Information of all Abstract Web Services (3,8) (5,9) Abstract BP (SPA) (1,7) P Q Constraint: The execution duration of two consecutive nodes has no Intersection. s1 s1 s2 s2 Execution time: within 8 time units s3 s3 Complete Instantiation s4 s4 s5 s5 13-15 December 2010 ServiceWave 2010
78. Find A Feasible Solution Middleware Layer Workflow Instantiation (0,3) (0,3) (1,6) Registry Publish Information of all Abstract Web Services (3,8) (5,9) Abstract BP (SPA) (1,7) P Q s1 s1 s2 s2 Execution time: within 8 time units s3 s3 Complete Instantiation s4 s4 s5 s5 (0,7) 13-15 December 2010 ServiceWave 2010
79. Return Instantiation Result Middleware Layer Workflow Instantiation (0,3) (0,3) (1,6) Registry Publish Information of all Abstract Web Services (3,8) (5,9) Abstract BP (SPA) (1,7) P Q Return Instantiation s1 s1 s2 s2 Execution time: within 8 time units s3 s3 Complete Instantiation s4 s4 s5 s5 (0,7) 13-15 December 2010 ServiceWave 2010
80. Ready For Execution Middleware Layer Workflow Instantiation (0,3) (0,3) (1,6) Registry Publish Information of all Abstract Web Services (3,8) (5,9) Abstract BP (SPA) (1,7) P Q Return Instantiation s1 s1 sp2 s2 s2 Execution time: within 8 time units sp6 s3 s3 sp3 Complete Instantiation s4 s4 sp5 s5 s5 sp1 13-15 December 2010 ServiceWave 2010
132. Pass the elements/commands to a remote multi-set
133. Either from the user interface or can be performed automatically by reaction rules (once a certain type of element is produced, it will be sent to a specified remote multi-set)13-15 December 2010 ServiceWave 2010
134.
135. Each component is implemented by a multi-set (chemical reaction container);
136. Service related elements can be seen as molecules (a workflow can be seen as a composed molecule);
159. Service Monitoring: monitor the execution of a workflow, detect the unpredictable problems (such as node crash etc.);
160. Adaptation process: replace the crashed part with new offers and continue the execution;13-15 December 2010 ServiceWave 2010
161. ICSOC-ServiceWave 2009 Thanks For Your Attention! * The research leading to these results has received funding from the European Community’s Seventh Framework Programme [FP7/2007-2013] under grant agreement 215483 (S-CUBE).