Website and Network Stress Monitoring

Written by Vadim Mazo and David Leonhardt

In today’s world, organizations are fast acceptingrepparttar web and related applications as part of their overall business strategies. They understand thatrepparttar 131501 Internet provides them withrepparttar 131502 potential to target a very focused set of customers spread across a very diverse geography.

For a successful Internet presence, it is important thatrepparttar 131503 web server and web applications are reliable, scalable and always available, irrespective of traffic volumes torepparttar 131504 site.

To achieve this, you must test all your hardware and software using tools to check your website, usually called web stress tools. These tools should ideally be used even beforerepparttar 131505 site is onrepparttar 131506 World Wide Web. They can provide a reasonably good estimate aboutrepparttar 131507 performance of your website and a company can identify issues before they arise.

Such issues might include slow response times while openingrepparttar 131508 website, a limited number of users able to simultaneously browserepparttar 131509 website, or a cap onrepparttar 131510 number of requests that can be handled by a processing application. Based onrepparttar 131511 results, a webmaster can identifyrepparttar 131512 bottlenecks and take corrective actions before they result in lost sales.

What does website stress testing do?

Web stress testing provides performance reports for varying elements. For example, users might be complaining that your shopping site is taking ages to load and most search results are showing errors message. Using a web stress tool, you can checkrepparttar 131513 performance of your web server. To your surprise,repparttar 131514 CPU utilization onrepparttar 131515 Server may be just 20%. But if you are also monitoringrepparttar 131516 database application, you might find that it is already running at 100% and isrepparttar 131517 most likely reason for poor performance.

Stress tools can be deployed as software solutions where you can monitorrepparttar 131518 key components of your servers such asrepparttar 131519 CPU, memory and hard disk utilizations. They are built with user-defined alerts that can be triggered if a particular parameter crosses a threshold set byrepparttar 131520 user. As an example, you can configure an alert that must be generated wheneverrepparttar 131521 CPU utilization crossesrepparttar 131522 80% mark. Although this is helpful in identifying system bottlenecks,repparttar 131523 results are limited to web servers that are connected to your internal network.

Web Services Interoperability

Written by Senthil Krishnamurthy from Aspire System (India) Pvt. Ltd.

Interoperability is one ofrepparttar main promises of Web services. Web services are designed to be independent ofrepparttar 131499 underlying operating system and programming language. In this article we will address some basic web services interoperability issues that are useful for developers. We will focus onrepparttar 131500 two most popular platforms - Java and Microsoft C#.

Introduction More and more we're finding that WSDL lies atrepparttar 131501 heart of Web services interoperability. WSDL isrepparttar 131502 description language for Web services. Usually a WSDL document is automatically generated by Web services framework tools (e.g., Axis, WASP WSDLCompiler) fromrepparttar 131503 code written in a particular programming language. Developers can userepparttar 131504 WSDL document to generate client-side stubs or proxies, which provide convenient access to Web services. Thusrepparttar 131505 key to enabling seamless Web services interoperability isrepparttar 131506 ability of one Web services framework to consumerepparttar 131507 WSDL documents generated by other frameworks. The WSDL interoperability effort is just taking off. You can see further details at How to not get trapped The following subchapters give you some basic tips on how to write interoperable Web services using today's Web services frameworks. These tips may significantly ease your life as well asrepparttar 131508 lives of other developers who will use your Web services. Hopefully some of those tips will be outdated soon. Keep your types simple - avoid advanced XML Schema constructs The XML Schema standard is very complex and difficult to implement. Moreover, XML Schema processing is quite time consuming, so many frameworks sacrifice full XML Schema support for performance. Some advanced XML Schema constructs (e.g., choice) are quite hard to express in a programming language, and few Web services frameworks support them. Sorepparttar 131509 key success factor in Web services interoperability is to use basic data types, such as primitive data types, arrays, and structures. As a best practice, decomposerepparttar 131510 complex types in your interfaces into simple and clean interfaces with basic data types. Also avoid using specific techniques (e.g. INOUT parameter passing) that aren't widely supported. Sample Architecture Let we seerepparttar 131511 architecture of my sample application which uses web services along with messaging concepts. Architecture Diagram Here 3 web services are used. Two web services, Place Order and Get Order are developed and deployed in Java environment and another one, Send Message is in C# environment.

The Ordering System callsrepparttar 131512 Place Order web service to place an item to order. The Place Order web service stores that item and notifiesrepparttar 131513 Java Expeditor Client through JMS. Afterrepparttar 131514 intimation message has come from JMSrepparttar 131515 Java Expeditor Client callsrepparttar 131516 Get Order web service to retrieverepparttar 131517 ordered items and details. The same Place Order web service callsrepparttar 131518 another web service, Send Message to sendrepparttar 131519 message to MSMQ, thenrepparttar 131520 Notification message is sent torepparttar 131521 C# Expeditor Client from MSMQ. Afterrepparttar 131522 intimation message has come from MSMQ,repparttar 131523 C# Expeditor Client callsrepparttar 131524 Get Order web service to retrieverepparttar 131525 ordered items and details. Here functionality ofrepparttar 131526 Java Expeditor and C# Expeditor Client are same except that they are developed in different platform to illustraterepparttar 131527 interoperability of web services. So here its proved that web service Get Order, which is developed and deployed in Java environment is accessed fromrepparttar 131528 C# Expeditor client andrepparttar 131529 web service Send Message, which is developed and deployed in C# environment is accessed from Place Order web service of Java environment.

Accessing Java Web Service from C# To invokerepparttar 131530 Get Order web service in C# Expeditor Client application, we are going to Add Web Reference torepparttar 131531 Get Order web service. The steps to be followed to do this are, 1. In Project menu, click Add Web Reference…

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