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Latest Articles from AJAX & RIA Journal
In Part IV, we wrapped up our discussions on bandwidth, congestion and packet loss. In Part V, we examine the four types of processing delays visible on the network, using the request/reply paradigm we outlined in Part I. From the network’s perspective, we allocate the time period bet...
In Part II, we discussed performance constraints caused by both bandwidth and congestion. Purposely omitted was a discussion about packet loss – which is often an inevitable result of heavy network congestion. I’ll use this blog entry on TCP slow-start to introduce the Congestion Windo...
Compuware Corporation has announced that SD Times Magazine has named Compuware APM to its 2014 SD Times 100 list as a leader and innovator in the "Mobile Testing, Quality Assurance, and Security" category. The award reaffirms the company's ongoing success to driving mobile application ...
When we think of application performance problems that are network-related, we often immediately think of bandwidth and congestion as likely culprits; faster speeds and less traffic will solve everything, right? This is reminiscent of recent ISP wars; which is better, DSL or cable mode...
As a network professional, one of your newer roles is likely troubleshooting poor application performance. For most of us, our jobs have advanced beyond network “health,” towards sharing – if not owning – responsibility for application delivery. There are many reasons for this more jus...
make it a lot easier and more fun to develop apps for both iOS and OS X. That’s in contrast to the current language, Objective-C, which is somewhat antiquated and considered by many to be difficult to use. Although Swift is easier to use, we’re sure that there will be issues like crash...
You can spend MILLIONS every year improving and maintaining your application, but if you have no insight into your competition how do you know your place in the market and if all that investment has been worthwhile? “If you know the enemy and know yourself, you need not fear the resul...
A project management office contributes value to its organization by helping executives make informed, portfolio-based decisions regarding project prioritization and resource allocation. This case study shows how a PMO can accomplish this mission more effectively by delivering value in...
Over the last two decades, various Agile approaches have been introduced and practiced. Of these, in last 5 to 7 years, Scrum has gained the most popularity resulting from a combination of simplicity, ease of use, and effective public relations. Scrum success in software development or...
In production support it is often hard to correlate what might be happening on local servers with what users are reportedly experiencing. In April, the developers for a Java application that handles electronic distribution of scanned mail and electronic faxes were receiving reports tha...
Have you ever deployed a change to production and thought “All went well – Systems are operating as expected!” but then you had to deal with users complaining that they keep running into errors? We recently moved some of our systems between two of our data centers – even moving some c...
Adopting an Application Performance Management (APM) strategy will help you manage the quality of the Customer Experience. The challenge is that APM has evolved into a mosaic of monitoring tools, analytic engines, and event processors that provide many solutions to different problem se...
Service Level Agreements (SLAs) offered by cloud providers are too often about Specification and not Service. It should come as no surprise that vanity metrics, like Availability, are used instead of business metrics because they are simple to measure and easy to misconstrue. Metrics t...
No matter how often you deploy your application or how sophisticated your delivery pipeline is, you always need to know the quality status of the software you are building. That can only be done if you measure it; but measure what exactly? In Part 1 we introduced the Concept of Quality...
Poorly performing websites, like Twitter’s recent fiasco with Ellen’s selfie, are a constant source of irritation for users. At first you think it’s your computer, or maybe someone on your block is downloading the entire “Game of Thrones” series. But, when nothing changes after refresh...
Are you developing or hosting PHP applications? Are you doing performance sanity checks along your delivery pipeline? No? Not Yet? Then start with a quick check. It only takes 15 minutes and it really pays off. As a developer you can improve your code, and as somebody responsible for y...
Have you seen this error message before “java.sql.Exception: ORA-00060: deadlock detected while waiting for resource”? This is caused when parallel updates require locks on either rows or tables in your database. I recently ran into this exception on an instance of an IBM eCommerce Se...
HTML5 is still one of the most discussed topics amongst us technical types. The key challenge, however, has remained unanswered for a long time. How do you effectively wrap HTML5 for use in native mobile applications? Unfortunately I do not have a universal answer, but I do have a s...
When the agile movement re-cast the roles of the SDLC they did so with small projects as the baseline of their experience. A typical minimal SDLC method includes subject matter experts (those who execute the current workflow activities), a Project Manager, a Business Analyst, a Softwar...
Telerik Controls are great for building modern, rich clients, and web applications often seen at the enterprise level. I just worked with a company that uses these controls in their soon-to-be-released customer-facing SharePoint portal. They ran a small load test that showed that the r...
The purpose of this article is to describe the steps involve to configure Datapower service for the Database communication. The service will parse the incoming parameters from the request, construct a SQL query string and returns the data from the Database, based on the constructed que...
I would say that only one out of a million exceptions thrown in an application actually makes it to a log file – unless you run your application in verbose logging mode – Do you agree? No? Here is why I think that is: because most exceptions are handled by your code or by the framework...
Are you serving .SWF files from your web server and getting complaints from your end users that your flash app is “just slow?” Or has your Ops team wondered why you see such high web request response times for some of the web service calls executed by your Flash Client? I was just wor...
Two weeks ago I wrote about how the world’s largest exporter of dairy products uses SAP to support their huge delivery chain of dairy products. We recounted how Fonterra used an Application Performance Monitoring (APM) tool to discover that additional training for employees was necessa...
Java 8 has been reengineered and the most significant enhancement in this release is Project Lambda Expressions for the Java Programming Language. To be more comprehensive, the standout features of JDK 8 are Project Lambda the Nashorn JavaScript Engine and a new Date and Time API. Al...
We first discussed Super Bowl lessons learned around bloated web pages that brought down sites like Kia.com. On the other side, GoDaddy did a great job in reducing the page load just for the time of the Super Bowl to ensure that their site wouldn’t go down. But there is more to learn ...
Maximum productivity can be achieved more efficiently through event correlation, system automation and predictive analysis. Making that a reality however, requires consideration on how to manage the integration touch points from multiple toolsets and openness to the intrinsic value tha...
User experience can boost or kill your revenue. Unhappy users are likely to abandon a service they struggle with and go to your competitors. To effectively manage the experience of your users, you need to efficiently monitor and understand their transactions in your mobile, web and ent...
VoltDB announced that it has closed $8 million in Series B funding. The round was led by a Silicon Valley luminary with participation from two additional independent investors as well as existing stakeholders Sigma Partners and Kepha Partners. This funding represents the first in a suc...
How often do you deploy new software? Once a month, once a week or every hour? The more often you deploy the smaller your changes will be. That’s good! Why? Because smaller changes tend to be less risky since it’s easier to keep track of what has really changed. For developers, it’s ce...
In my previous posts I wrote about how important it is to have end-to-end visibility into SAP in order to avoid serious problems in our delivery chain or to discover that application performance degradation was caused by malfunctioning hardware. One of our New Zealand customers, Fonte...
Compuware Corporation on Tuesday announced that effective February 1, 2014, it has opened a new Center of Excellence for SAP solutions in the Partner Port, located near SAP headquarters, where more than 100 SAP partners and other companies with close relationships with SAP have office ...
Compuware Corporation has announced a major new release of its Data Center Real User Monitoring solution (DC RUM). Enhanced analytics and new network packet capture and analysis capabilities simplify identification and triage of performance issues across applications, infrastructure an...
In a previous post, we discussed why GoDaddy could sustain the peak load after its Super Bowl Ad campaign aired and why others like Kia wasted a lot of marketing money because its site availability dropped under the load. In this post, we will look at the technical details behind the i...
Compuware Corporation on Wednesday announced that Compuware APM for Big Data now offers enhanced support and out-of-the-box dashboards that enable organizations to optimize big data projects through unmatched visibility into Hadoop, NoSQL and Cassandra deployments. Now organizations ha...
This article is based on the experience of Jan Swaelens, Software Architect at Sofico. He is responsible for automatic performance testing of the company’s new web platform based on GWT and SmartGWT. Sofico is specialized in software solutions for automotive finance, leasing, fleet and...
I have spent the past few weeks watching this video series. I started watching it on the treadmill in the morning before work. I did that until I hit lesson 5. It is 4 hours and 20 minutes long. I started watching lesson 5 in front of the computer, not because I didn't want to walk for...
It’s that time of the year again where millions of football fanatics (and non-fanatics) will be gathered around their TV watching the biggest match of the season, Denver Broncos vs. Seattle Seahawks. Last year the big game reached over 108 million Americans, the third most watched tele...
APM is entering into a period of intense competition of technology and strategy with a multiplicity of vendors and viewpoints. While the nomenclature used within its space has five distinct dimensions that elucidate its meaning, the very acronym of APM is in question: Application Perfo...
Compuware Corporation has announced the 2013 winners of its annual Best of the Web awards, honoring top performing sites across five major industries. A comprehensive report featuring all category winners and detailed results of each winner's performance can be downloaded here. Compuw...