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Work with Web services in enterprise-wide SOAs, Part 9: Integrate RFID Web services into EAI applications in multiple SOAs
Want to develop Radio Frequency Identification (RFID) Web Services using IBM Relational Web Developer for WebSphere Software? Judith M. Myerson demonstrates how to integrate RFID Web services into Enterprise Application Integration (EAI) applications in multiple Service-Oriented Architectures (SOAs). Follow along with an example of how to resolve the problem by developing or modifying RFID Web services rather than by making changes to a long-running EAI application.
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10 Jan 2006 |
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Adopt an SOA in a service-oriented enterprise
Want to know how to adopt Service-Oriented Architecture (SOA) in a
service-oriented enterprise (SOE)? In this article, regular developerWorks author
Judith Myerson focuses on issues related to transitioning to an SOE, transformation
initiatives, the impact of organizational changes, and implementing SOE while
avoiding the usual organizational pitfalls. Get suggestions on how to close the gaps
in the SOE.
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01 May 2008 |
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Optimized and predictable Ajax applications
Wouldn't it be nice for developers if all browsers, computer models, and Ajax
application users were the same? Maybe, but the reality is that they are not.
Developers face a myriad of challenges when developing applications that behave
predictably across browsers, computers, and individual user settings. When users
transfer Ajax applications from one browser type to another (and especially when they
transfer an Ajax application into a Web service portal), they're not guaranteed the
same browser experience because of each browser's inherent limitations. In this article, author Judith Myerson gives a brief discussion of these limitations and what pitfalls to avoid, including some helpful solutions for optimizing browser differences.
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30 Oct 2007 |
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Speed up your Ajax applications while dodging Web services vulnerabilities
Deploying bandwidth-efficient Ajax applications does not guarantee that the
service levels in a Service Level Agreement will stay high. No matter how well you
change code in the Ajax format to make it more bandwidth efficient, there will be always
risks and vulnerabilities you'll need to watch out for and mitigate. Regular
developerWorks author Judith Myerson gives a brief Ajax recap, shows what Web services
vulnerabilities are and why Service Level Agreements (SLA) are important, and suggests some solutions for speeding up Ajax applications.
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28 Aug 2007 |
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Use SLAs in a Web services context, Part 3: Integrate Web services into EAI with a SLA guarantee
Judith M. Myerson helps you save time integrating Web services applications with EAI by explaining their limitations and helps you to better understand the major differences between EAI and Web services. She also shows you how to develop system interruption thresholds as a way of improving your Web services' chances of meeting the SLA guarantee for uptime availability of the resources that SOA players consume and produce dynamically.
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29 Oct 2004 |
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Use SLAs in a Web services context, Part 2: Guarantee second-generation Web services applications with a SLA
Second-generation Web services applications require that the service-level agreements (SLA) guarantee reliability, availability, and quality of the service that the businesses pay for. As some applications will interact with non-Web services, the customers will ask for a SLA with more precise measurements. Judith M. Myerson explains how you can establish a SLA for those applications. She covers failure alerts, latency and throughput and gives examples of what questions to ask regarding testing an application and how to answer them.
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29 Oct 2004 |
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Work with Web services in enterprise-wide SOA, Part 6: Load balance Web services applications with WebSphere Application Server
Want to learn more about load balancing Web services applications between servers in Service-Oriented Architecture (SOA)? Judith M. Myerson discusses the importance of fast response that users demand during peak traffic times and gives examples of load balancing techniques. She discusses IBM WebSphere(R) Application Server and WebSphere Edge Server as load balancing tools that developers and system and network administrators, in a collaborative effort, can use to distribute Web services applications between servers, thus ensuring that performance, reliability, and availability remain high during peak traffic times.
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23 Sep 2005 |
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Human-facing Web services, Part 3: Build portals with WSRP
In the first two articles in this series, Judith Myerson examined business users' collective viewpoints on how Web pages and remote portals should be presented, and looked at how the WSIA specifications can be used to build human-facing applications. In this third installment, you'll learn how you can use Web Services for Remote Portals (WSRP) to extend the functionalities of the WSXL component services. You'll see sample code that demonstrates how to aggregate interactive applications into a single portal using one standard adapter for different interfaces and protocols.
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01 Jan 2003 |
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Human-facing Web services, Part 1: An introduction to Web Services Experience Language
As Web services move further into the mainstream, business users are starting to make their voices heard on their future directions. One venue for this discussion is the Organization for the Advancement of Structured Information Standards (OASIS), a not-for-profit group that is driving the adoption of the Web Services Experience Language (WSXL) specification. In this article, Judith M. Myerson explains how WSXL will aid the development of Web services that better serve user needs. Through the WSXL component model, developers will be able to adapt Web services on the fly and create new aggregate portals to provide users with the functionality they need, when they need it.
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01 Sep 2002 |
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Work with Web services in enterprise-wide SOAs, Part 4: Build an SOA middleware application with Rational development tools
Interested in building an enterprise Service-Oriented Architecture (SOA) middleware application? Judith Myerson gives you four possible approaches: top-down, bottom-up, sideway and embedding, while helping you to explore the various tradeoffs of each. You also learn how to determine the maximum number of shared SOAs the middleware application can carry.
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13 May 2005 |
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Use SLAs in a Web services context, Part 7: Mitigate risk for vulnerability with a SLA guarantee
Mitigate the risk of exposing Web services vulnerabilities in a heterogeneous Service-Oriented Architecture (SOA) and reduce the chances of adversely impacting the service-level agreement (SLA) guarantee for uptime availability. Web services are designed to interact quickly with other Web services and with non-Web services in SOA. Judith M. Myerson goes beyond the Advanced Vulnerability Description Language (AVDL) to show you how to address the issues of determining interruption thresholds for a Web service that, for example, has not completed the task of responding to a request for vulnerability information over HTTP.
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28 Jan 2005 |
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Upgrade to the system requirements engineering framework in SOA
Want to know how to move up to the system requirements engineering framework
(REF) in Service-Oriented Architecture (SOA)? Learn about issues related to shifting
to the framework, soft-goal operationalization, and completing the framework with
constraints, risks, and changes. Regular developerWorks author Judith Myerson gives
you examples of developing soft goals and suggests ways to operationalize one goal.
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15 May 2008 |
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Work with Web services in enterprise-wide SOAs, Part 8: Notify Web services and EAIs in heterogeneous SOAs
Examine examples of threshold warning notifications that alert consuming Web services the system is nearing the maximum load multiple Service-Oriented Architectures (SOAs) can carry. In Part 8 of this series, you'll learn how Web services consume, produce, and broker notifications across heterogeneous SOAs. Judith Myerson also covers the use of the Subscribe-Publish for Web services whitepaper and WS-Notification family of documents.
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11 Nov 2005 |
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Work with Web services in enterprise-wide SOA, Part 7: Speed-up Web services applications with the XML-binary Optimized Packaging Specification
Want to learn how to optimize a Web services application using the XML-binary Optimized Packaging (XOP) Specification? Judith M. Myerson shows why the XOP package is more effective than XML parsers in processing Web services. She covers two scenarios of bloated Web services in multiple SOAs. To solve the problem, she discusses how the XOP package is more effective the XML parsers in the processing of large files in binary, rather than in text, format. She gives code examples before and after XOP processing to help developers which elements need to be changed.
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14 Oct 2005 |
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Work with Web services in enterprise-wide SOAs, Part 5: Optimize Web service applications with WebSphere Business Integration tools
Want to learn how to optimize a Web service application in a Service-Oriented Architecture (SOA)? Judith M. Myerson stresses the importance of business process rules as the number one priority in optimizing Web services and gives examples of other optimization techniques, such as reducing the number of Web requests and execution time. She also discusses the IBM WebSphere(R) Business Integration tools that developers and business analysts might use in a collaborative effort to model Web services for optimization.
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14 Jul 2005 |
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Work with Web services in enterprise-wide SOAs, Part 5: Optimize Web service applications with WebSphere Business Integration tools
Want to learn how to optimize a Web service application in a Service-Oriented Architecture (SOA)? Judith M. Myerson stresses the importance of business process rules as the number one priority in optimizing Web services and gives examples of other optimization techniques, such as reducing the number of Web requests and execution time. She also discusses the IBM WebSphere(R) Business Integration tools that developers and business analysts might use in a collaborative effort to model Web services for optimization.
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14 Jul 2005 |
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Advancing the Web services stack
IT developers will be interested in Judith M. Myerson's proposed revisions to the IBM Web services architecture stack. In this article, she demonstrates how new standards, particularly Web Services Experience Language (WSXL), Trading Partner Agreement (TPA), WS-Security, and WS-Inspection, can serve as updates to the architecture. Developers could apply these additions to the stack to the development of Web services or even to a plan for Web services life cycle management.
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01 Jun 2002 |
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Use SLAs in a Web services context, Part 1: Guarantee your Web service with a SLA
Many businesses are demanding service-level agreements (SLAs) that guarantee the reliability of the IT services they pay for. As Web services enter the mainstream, customers will be asking for SLAs that ensure their quality. In this article, Judith M. Myerson explains how you can establish a service-level agreement (SLA) that covers a Web service. She covers the exceptions that should be included in a SLA, and gives examples of testing a Web service for SOAP interoperability before launching it into the production environment as an exposed Web service that is covered by a SLA.
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29 Oct 2004 |
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Work with Web services in enterprise-wide SOA, Part 3: Consolidate your SOAs as a three-dimensional integration hub to improve speed and reliability
Consolidate your Service-Oriented Architectures (SOAs) as an integration hub in the three-dimensional space, improving Web services interoperability. Judith M. Myerson gives you four consolidation instances: a two-dimensional hub of unshared SOAs, a two-dimensional hub of shared SOAs, and two views of three-dimensional hubs of shared SOAs. While considering various trade-offs, it is important to determine the maximum number of SOAs an integration hub in the three-dimensional space can carry so that you can avoid hub overloads.
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15 Mar 2005 |
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Work with Web services in enterprise-wide SOA, Part 2: Maximize external Web services interoperability
Maximize the interoperability of external Web services in multiple Service-Oriented Architectures (SOA) between external and internal Web services. Judith Myerson shows you how you can change the type of service, location, and platform for each Web service to implement business processes of the originating application.
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24 Feb 2005 |
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Work with Web services in enterprise-wide SOAs, Part 10: Defense in depth for multiple SOAs using IBM Business Modeler and Rational Web Developer for WebSphere
Learn how defense in depth can protect your SOAs from attack -- whether they're built on a foundation of technologies or policies and procedures. Judith M. Myerson shows what defense security mechanisms to consider for the defense in depth.
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03 Feb 2006 |
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Dedicated versus distributed security monitoring as a Web services host in
an SOA
Web service as a dedicated security monitoring host or Web services that
work together as the distributed security monitoring host? Judith Myerson
examines the pros and cons of each host type and suggests how each can be used
to solve security problems.
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23 Oct 2008 |
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Work with Web services in enterprise-wide SOA, Part 1: Close enterprise system gaps with multiple SOAs
Use multiple Service-Oriented Architectures (SOA) to close enterprise system gaps. Judith M. Myerson shows you four scenarios that combine Web services into a composite application in a single SOA, multiple SOAs, a single SOA with multiple EAI applications, and multiple SOAs with EAI applications. While still considering various trade-offs, determining the maximum number of SOAs a system can carry helps you avoid SOA overloads.
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04 Feb 2005 |
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Use SLAs in a Web services context, Part 6: Localize Web services with a SLA guarantee
In Part 6 of this series, Judith M. Myerson explains how developers can localize enterprise office applications in a heterogeneous Service-Oriented Architecture (SOA) of Web services competing for scarce resources without adversely impacting SLA guarantees. She shows some consequences of inadequate bandwidths, space, and other resources to accommodate translated text, intensive graphic images, and associated links in Western European languages. While performance tradeoffs between XML and Java technology are considered, determining how much localization you need is important when using resources by other components of the SOA.
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07 Jan 2005 |
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Use SLAs in a Web Services context, Part 5: Firewall Web services with a SLA guarantee
In Part 5 of this series, Judith M. Myerson explains how you can centralize your firewall administration to better control and monitor firewalls for multiple Web services and the associated services and applications in a Service-Oriented Architecture (SOA).
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03 Dec 2004 |
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Use SLAs in a Web services context, Part 4: Secure multiple Web services with a SLA guarantee
In Part 4 of this series, Judith M. Myerson explains how enterprises can put their security administration in a centralized location to better control the access control lists (ACLs) for multiple Web services and their associated services and applications in the Service-Oriented Architecture (SOA). She also illustrates why setting up ACLs for multiple Web services applications is important. Securing open, loosely coupled systems of Web services in a heterogeneous SOA requires a more sophisticated security approach involving multiple administrators than the traditional approach for the tightly coupled non-Web services and EAI applications. Security protocols for EAI applications are more mature those for Web services.
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29 Oct 2004 |
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Work with Web services in enterprise-wide SOAs, Part 12: Develop risk management Web services in SOAs using IBM Rational ClearQuest
Part 12 in this series shows how to develop Web services to manage risks in SOAs. You'll see examples of how the risk cycle life should be expanded to accommodate a wider scope and range of threats, vulnerabilities, and risks in today's world; and why Web service orchestrators' roles should be important part of the newer version of the life cycle.
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28 Apr 2005 |
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SOA services in a grid and netcentric world
Get to know grid types, grid computing, and Global Information Grid (GIG).
This article focuses on issues related to harnessing unused resources for computer
power that's too intensive for a stand-alone machine. Explore examples of
solutions, such as monitoring change in grid scale, grid coupling switch, and GIG
and Service-Oriented Architecture (SOA) testing methodology.
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06 Mar 2008 |
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Tight-coupling Web services in the SOA
Look at the pros and cons of both tight and loose coupling Web services and
the resulting change in scale that comes from tight coupling. This article includes
examples of criteria to measure performance of tightly coupled Web services during
the testing process.
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24 Jan 2008 |
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Cultural considerations for SOA adoption in the federal sector
Look beyond the technical aspects of Service-Oriented Architecture (SOA)
adoption. This article focuses on the cultural considerations across organizational
boundaries in the federal sector. See examples of how you can build blocks of SOA
while maintaining adherence to appropriate organizational cultural aspects.
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10 Jan 2008 |
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Develop SQL-XQuery Web service translator for DB2 9 with IBM Rational RequisitePro and Rational ClearCase
Want to translate SQL into XQuery and vice versa when you prepare to query the hybrid database system? Learn how to develop Web services to map from SQL to XQuery, compile XQuery to SQL, and translate portions of the SQL queries as embedded XQuery statements. You'll see examples of how you can use IBM Rational Requisite Pro and IBM Rational ClearCase as part of the collaborative efforts in the translation process.
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20 Nov 2006 |
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Work with Web services in enterprise-wide SOAs, Part 15: Collaborating the framework for Web Services Implementation with WS-Resource Framework using IBM Rational ClearCase and ClearQuest
See how to use OASIS frameworks to develop Web services in a lifecycle. This 15th article in a series on Web services in enterprise-wide SOAs will show you how to collaborate Framework for Web Services Implementation with WS- Resource Framework using IBM Relational ClearQuest and ClearCase. You'll see collaborative efforts by examples of resource properties for a logical shopping cart and a physical printer.
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11 Aug 2006 |
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Work with Web services in enterprise-wide SOAs, Part 14: Migrate legacy service components as discoverable Web services with IBM Rational RequisitePro and Rational ClearCase
Migrate service components of a legacy system as human-facing Web services. Learn how to untangle component dependencies. You'll see examples of IBM Rational Requisite Pro and IBM Rational Clearcase as part of the collaborative efforts in the migration process.
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11 Jul 2006 |
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Work with Web services in enterprise-wide SOAs, Part 13: Develop a return on investment calculator using IBM Rational ClearQuest
Develop Web services to calculate returns on investment (ROIs) using IBM Rational ClearQuest? Part 13 in this series shows you what the ROI methods are and how to choose between them under varying conditions.
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12 May 2006 |
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Work with Web services in enterprise-wide SOAs, Part 11: Connect XOP-based Web services to external services using WebSphere Business Modeler and Rational Web Developer for WebSphere
Interested in connecting XML-binary Optimized Packaging (XOP)-based services to external services? In this article, you develop bridge Web services, determine file size threshold, and set up multiple queues. Understand external file dependencies, create nonlinear queues, use nonlinear fetches, and set optimal size threshold. And simplify the development process using IBM Rational Web Developer and IBM WebSphere Business Modeler.
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10 Mar 2006 |
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