What is Application Performance Management (APM)? Like a lot of good questions, it depends on your business needs.  What is the goal of an ideal APM?  Does it mean 99.999% availability?  Perhaps it is a favorable overall end user experience when using the application but, as compared to what? My point is that Application Performance Management / Monitoring means different things to different businesses and it can even depend on the application involved. What is the Goal of APM “Begin with the goal in mind.” I wish I could take credit for that quote.  What is the goal of the APM? Have you listed out the objectives you hope to obtain from your APM strategy?  This approach will help your team ensure satisfaction with the final solution chosen.  Here are some examples. Minimum of 99.999% availability with lower Mean Time To Know (MTTK) and Mean Time To Repair (MTTR) Less ... (more)

Generic Request Response Broker for JMS

This article describes the design and implementation of a generic request/response broker (RRB) for JMS. RRB augments JMS with a highly efficient implementation of the request-response paradigm. It's extremely important for many asynchronous applications since JMS has somewhat weak built-in support for the request-response paradigm that might be inadequate for high-load enterprise applications. RRB solves the following common problems. It: Provides a generic high-performance application and JMS provider-independent implementation of the request-response pattern. Supports timeouts for non-blocking clients. Allows efficient handling of a large number of requests/responses. Lets one hide all the JMS details behind the façade interface. Reduces performance degradation when a request travels through multiple façade proxies. Possible Solutions and Their Performance Compar... (more)

Combining RMI with SOAP

At the end of last year, I was given a rather unpleasant assignment. This company had several Java Remote Method Invocations (RMI) services that were interacting with the legacies of the organization and I needed to open up an XML interface for them. My first idea was to use the Simple Object Access Protocol (SOAP). But the current W3C specification and implementation of the SOAP API from Apache presented only the HTTP binding for SOAP. Because of this, the SOAP services had to be deployed in a Web server container. The possibility of opening up a SOAP-based interface to the existing RMI services was limited by the following factors: If we convert the existing RMI services as SOAP-based and deploy them in a Web server container, the existing clients to those services have to be rewritten or reconfigured in order to be able to talk to the SOAP server in a SOAP-reco... (more)

How To Build a Matrix Calculator for Java-Enabled Mobile Phones

The matrix is an indispensable tool for engineers and mathematicians. Matrices are used in many engineering applications for solving linear equations, differential equations of n-order, and so on. Mathematicians have developed matrix arithmetic to help engineers in solving their engineering problems. It is generally very easy to understand and perform. However, due to the mere size of the computations involved, it's prone to errors. Even at the school level, students want to use a calculator to solve (or at least verify the results of) their school assignments on matrices. Some of the scientific calculators support Matrix Arithmetic. These scientific calculators are not always handy. In recent days, mobile phones have become abundant and one may dare to say that virtually every literate person in this world possesses a mobile handset. Many of the present-day mobile h... (more)

Internet of Things News Weekly

Welcome to M2M News Weekly, an online newsletter that consists of the most interesting news and articles related to M2M (machine to machine) and embedded mobile devices.  I aggregate the information, include the original links and add a synopsis of each article.  I also search for the latest market numbers such as market size, growth and trends in and around the M2M market. Also read Enterprise Mobility Asia News Weekly Also read Field Mobility News Weekly Also read Mobile Commerce News Weekly Also read Mobile Cyber Security News Weekly Also read Mobile Health News Weekly Also read Mobility News Weekly Looking for an enterprise mobility solution?  Read the Mobile Solution Directory Here! An industry group comprising mobile operators in Asia-Pacific has unveiled a new alliance to provide a "one-stop-shop" to support machine-to-machine deployments in the region. Read Origin... (more)

Reflection & Introspection: Objects Exposed

One of the salient aspects of the Java language is the control it gives to developers for dynamically generating and reusing code. This allows the language to offer Java programmers the ability to write code in which the actual behavior is determined at runtime. Of the eleven buzzwords used to define Java, this article is going to focus on the dynamic nature of the Java programming language. One of the salient aspects of the Java language is the control it gives to developers for dynamically generating and reusing code. This allows the language to offer Java programmers the ability to write code in which the actual behavior is determined at runtime. Of the eleven buzzwords used to define Java, this article is going to focus on the dynamic nature of the Java programming language.Introspection Uses Reflection Reflection and introspection are very closely related. Refle... (more)

Secrets of Java Serialization

Serialization in Java is an operation in which an object's internal state is translated into a stream of bytes. This binary stream or image of the object is created in an operating system-neutral network byte order. The image can be written to a disk, stored in memory, or sent over a network to a different operating system. This amazing feat requires little or no work on the part of the programmer. Just implement the serializable interface, which contains no methods, and call the writeObject() method on your object, and it's serialized! You can serialize an object to or from any I/O device that Java supports. The serializable interface doesn't contain any code or data; it's a marker interface. If a hierarchy of classes is to be serialized, each class in the hierarchy must implement the serializable interface. All objects that are in an object hierarchy, or "Web of ... (more)

Sun Microsystems Gets an 'A' for the Java Desktop System

Delivering on its commitment to provide schools an alternative to expensive and complex computing solutions, Sun Microsystems, Inc. announced the rollout of the Sun Java Desktop System to the K-12 and higher education market. The Java Desktop System for Education is an affordable, comprehensive, simple to use and secure enterprise-class desktop solution. It introduces a business model to education institutions that provides a single price of $25 per desktop per year for the desktop software, maintenance, support and training. The Java Desktop System provides a complete desktop environment of productivity tools for students, which includes an office suite, Web browser, e-mail, calendar, instant messaging and more. In addition, Java Desktop System is the only environment with fully integrated Java technology, making this "out-of-the-box" desktop ready to run thousands o... (more)

"No Sun Is An Island," Says Javalobby Founder

Read Eric Raymond's Open Letter to Scott McNealy: "Let Java Go" Read "Letting Java Go" - James Gosling in 2003 on Open-Sourcing Java As if driven by the cycles of the moon, it seems like the Java community gets a monthly visit from that special topic that divides and angers us more than any other: the question of whether Sun should "open source" Java? Most recently a top open source advocate named Eric Raymond (author of  The Cathedral And The Bazaar) published an open letter to Sun urging them to "Let Java Go." I have huge respect for the achievements of the open source community, but I tend to stay away from the pissing contests that these discussions about open sourcing Java often devolve into. I think the issue is something of a bugaboo, anyway. The source code for Java is readily available to anyone who accepts the Sun Community Source License (SCSL.) You can fix p... (more)

Cover Story: Personalize Your Web Applications

Personalization, a recurring requirement in most corporate Web applications, can be a very effective tool for streamlining Web applications and enhancing the Web user's experience. In many cases, personalization and security requirements go hand in hand; they can be dictated by corporate security principles and regulations that exist in banks, insurance companies, and any other organizations. This article targets enterprise architects and developers who are willing to invest a little time to develop a set of easy-to-use, reusable personalization components that are powerful enough to meet the needs of many enterprise applications. The personalization components that we describe here are based on rules declared and configured in an XML file. Personalizing Web applications with these components requires writing little or no Java code. Web pages are personalized usin... (more)

Understanding JSSE

The Java Secure Socket Extension (JSSE) is a set of packages that enable secure Internet communications. It implements a Java version of the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols. It includes functionality for data encryption, server authentication, message integrity, and optional client authentication. Although the JSSE guide provides detailed information on the JSSE API and its use in application programming, this article dives deeper into the different message exchanges involved when a programmatic Java client communicates with a server over the SSL. It will help developers understand the fundamental but often overlooked JSSE concepts of keystore, truststore, cipher suites, certificates, and the public key infrastructure and help them solve some of the common programmatic and configuration issues that arise when developing Java ... (more)