|By Rebecca Clinard||
|August 10, 2012 10:00 AM EDT||
The first step in performance or load testing a web application is to create a realistic test script. This script, representing a specific type of end user, contains steps that are fully automated transactions flows. Often, complex behaviors need to be emulated as part of these flows. To incorporate the needed behavior or to handle complex scenarios, testers need to customize these load scripts. The question is whether you utilize a tool that takes a GUI driven approach for script customization/manipulation, or whether you choose a tool which requires the use of a programming language.
As Performance testers, we typically evaluate several load testing tools before diving into a project. Some of us prefer the GUI driven approach to creating load scripts because, being results driven, we want to get the test up and running as quickly as possible. The GUI approach saves us time and there is no programming involved thus the learning curve is also extremely fast. These GUI scripts are typically easily modified by having their parameters and values organized in a visually obvious format. And just because a tool is easy to use, doesn't mean that it's only for beginners. Remember the good old days of MS-DOS? Eeek, thank goodness for GUI driven DOS (Windows).
Some testers (mistakenly) dismiss the GUI driven approach as being too limited for complicated behaviors. Old school testers insist on only utilizing program-based scripts because past experience has led them to think that this is the most flexible or the only choice for handling complicated behaviors. All too often, the perception is that GUI driven scripts limit the level of customizations possible to emulate a real user. This opinion is likely based on experiences with rudimentary GUI tools on the market that are too basic and limited in their capabilities such as handling dynamic content and varying the transactions flows.
However, there is a new breed in load testing solutions, designed and built to handle the most complex advanced scenarios. These are true enterprise-class solutions which provide a hybrid approach by containing both GUI and programming features. The power behind this hybrid approach enables the user to emulate even the most complex behavior but it also includes time saving features which can only be offered by a GUI solution.
Let's get really technical for a minute to highlight an example: Some tools provide the common "programming" tools like loops and conditions. Recorded values of parameters are easily replaced by variables with a click of the mouse. NeoLoad, an example of a modern enterprise solution, goes further to provide even more advanced features. Some specific examples include: 1) "Wait Until" Action to the current execution thread until certain conditions have been verified 2) "Shared Queue" Action to use values from one VU's response as input in an entirely different VU execution 3) a "While" Action allows various transactions, such as web pages, to be iterated while a condition remains false 4) "Try ...Catch" Action to break out of the script based on Validation or Assertions and go to the End phase. The use of nested actions creates even more complex behaviors. All of these advanced scenarios are accomplished without programming! PUSHtechnology which is rapidly being deployed in today's RIA's adds even more complexity. With asynchronous updates pushed to/from the page independent of complete page refreshes...imagine this programming nightmare! NeoLoad has a way to solve this problem using cutting edge technology that can "listen" for PUSH behavior (all polling or streaming requests) and wrap all these asynchronous requests into a GUI fork Action, even calculating the average time interval between execution, then presents you with a newly modified script to emulate these load pattern characteristics. Again, all of these GUI centric features allow further manipulation without the need for programming.
As the script becomes more complicated, it's nice to have this hierarchical GUI-type view.
New breed solutions not only allow for complex behaviors...the GUI approach has other time saving embedded assets. To handle dynamic parameters, NeoLoad is delivered with an ever evolving list of known architectural framework dynamic parameters which are automatically detected and handled by a wizard. The search and replace feature finds strings embedded in any request (body, header, URL's, XML tree, partial matches, etc.) and replaces or concatenates to the string with any data or variable - choose to replace entire string or just part of the string. There's an automatic extraction feature to take data from any response and use it to populate the value of a variable. You can enable/disable specific transactions at a page level or embedded request level which a click of the mouse to isolate transactions of interest. Target an entirely different QA/Performance/Production environment - change the Servers field from host where you initially made the recording to the new server name and port. Debug scripts easily using the side-by-side comparison feature with a tab isolating only the differences of recorded vs. replayed values.
From this perspective, the great debate over choosing a GUI driven or programming approach is over...eliminate the tradeoffs and choose a hybrid which has a powerful GUI and also extends the flexibility for programming. Skip most of the manual programming and only use coding where it's required. Both experts and beginners can agree there is now a solution which meets all of the load & performance testing challenges of your own unique web application. Introducing the "GUI hybrid".
SYS-CON Events announced today that Bsquare has been named “Silver Sponsor” of SYS-CON's @ThingsExpo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. For more than two decades, Bsquare has helped its customers extract business value from a broad array of physical assets by making them intelligent, connecting them, and using the data they generate to optimize business processes.
Sep. 27, 2016 03:00 AM EDT Reads: 2,736
There is growing need for data-driven applications and the need for digital platforms to build these apps. In his session at 19th Cloud Expo, Muddu Sudhakar, VP and GM of Security & IoT at Splunk, will cover different PaaS solutions and Big Data platforms that are available to build applications. In addition, AI and machine learning are creating new requirements that developers need in the building of next-gen apps. The next-generation digital platforms have some of the past platform needs a...
Sep. 27, 2016 03:00 AM EDT Reads: 1,790
SYS-CON Events announced today that ReadyTalk, a leading provider of online conferencing and webinar services, has been named Vendor Presentation Sponsor at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. ReadyTalk delivers audio and web conferencing services that inspire collaboration and enable the Future of Work for today’s increasingly digital and mobile workforce. By combining intuitive, innovative tec...
Sep. 27, 2016 03:00 AM EDT Reads: 2,915
Fact is, enterprises have significant legacy voice infrastructure that’s costly to replace with pure IP solutions. How can we bring this analog infrastructure into our shiny new cloud applications? There are proven methods to bind both legacy voice applications and traditional PSTN audio into cloud-based applications and services at a carrier scale. Some of the most successful implementations leverage WebRTC, WebSockets, SIP and other open source technologies. In his session at @ThingsExpo, Da...
Sep. 27, 2016 02:15 AM EDT Reads: 1,597
Cognitive Computing is becoming the foundation for a new generation of solutions that have the potential to transform business. Unlike traditional approaches to building solutions, a cognitive computing approach allows the data to help determine the way applications are designed. This contrasts with conventional software development that begins with defining logic based on the current way a business operates. In her session at 18th Cloud Expo, Judith S. Hurwitz, President and CEO of Hurwitz & ...
Sep. 27, 2016 02:15 AM EDT Reads: 3,023
Almost two-thirds of companies either have or soon will have IoT as the backbone of their business in 2016. However, IoT is far more complex than most firms expected. How can you not get trapped in the pitfalls? In his session at @ThingsExpo, Tony Shan, a renowned visionary and thought leader, will introduce a holistic method of IoTification, which is the process of IoTifying the existing technology and business models to adopt and leverage IoT. He will drill down to the components in this fra...
Sep. 27, 2016 02:00 AM EDT Reads: 1,721
The Internet of Things can drive efficiency for airlines and airports. In their session at @ThingsExpo, Shyam Varan Nath, Principal Architect with GE, and Sudip Majumder, senior director of development at Oracle, will discuss the technical details of the connected airline baggage and related social media solutions. These IoT applications will enhance travelers' journey experience and drive efficiency for the airlines and the airports. The session will include a working demo and a technical d...
Sep. 27, 2016 02:00 AM EDT Reads: 1,725
I'm a lonely sensor. I spend all day telling the world how I'm feeling, but none of the other sensors seem to care. I want to be connected. I want to build relationships with other sensors to be more useful for my human. I want my human to understand that when my friends next door are too hot for a while, I'll soon be flaming. And when all my friends go outside without me, I may be left behind. Don't just log my data; use the relationship graph. In his session at @ThingsExpo, Ryan Boyd, Engi...
Sep. 27, 2016 01:45 AM EDT Reads: 1,288
SYS-CON Events announced today that Pulzze Systems will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Pulzze Systems, Inc. provides infrastructure products for the Internet of Things to enable any connected device and system to carry out matched operations without programming. For more information, visit http://www.pulzzesystems.com.
Sep. 27, 2016 01:30 AM EDT Reads: 1,847
SYS-CON Events announced today that Numerex Corp, a leading provider of managed enterprise solutions enabling the Internet of Things (IoT), will exhibit at the 19th International Cloud Expo | @ThingsExpo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Numerex Corp. (NASDAQ:NMRX) is a leading provider of managed enterprise solutions enabling the Internet of Things (IoT). The Company's solutions produce new revenue streams or create operating...
Sep. 27, 2016 01:15 AM EDT Reads: 1,996
If you’re responsible for an application that depends on the data or functionality of various IoT endpoints – either sensors or devices – your brand reputation depends on the security, reliability, and compliance of its many integrated parts. If your application fails to deliver the expected business results, your customers and partners won't care if that failure stems from the code you developed or from a component that you integrated. What can you do to ensure that the endpoints work as expect...
Sep. 27, 2016 12:30 AM EDT Reads: 1,632
The Transparent Cloud-computing Consortium (abbreviation: T-Cloud Consortium) will conduct research activities into changes in the computing model as a result of collaboration between "device" and "cloud" and the creation of new value and markets through organic data processing High speed and high quality networks, and dramatic improvements in computer processing capabilities, have greatly changed the nature of applications and made the storing and processing of data on the network commonplace.
Sep. 27, 2016 12:00 AM EDT Reads: 1,047
WebRTC adoption has generated a wave of creative uses of communications and collaboration through websites, sales apps, customer care and business applications. As WebRTC has become more mainstream it has evolved to use cases beyond the original peer-to-peer case, which has led to a repeating requirement for interoperability with existing infrastructures. In his session at @ThingsExpo, Graham Holt, Executive Vice President of Daitan Group, will cover implementation examples that have enabled ea...
Sep. 27, 2016 12:00 AM EDT Reads: 1,540
Major trends and emerging technologies – from virtual reality and IoT, to Big Data and algorithms – are helping organizations innovate in the digital era. However, to create real business value, IT must think beyond the ‘what’ of digital transformation to the ‘how’ to harness emerging trends, innovation and disruption. Architecture is the key that underpins and ties all these efforts together. In the digital age, it’s important to invest in architecture, extend the enterprise footprint to the cl...
Sep. 26, 2016 10:45 PM EDT Reads: 470
Fifty billion connected devices and still no winning protocols standards. HTTP, WebSockets, MQTT, and CoAP seem to be leading in the IoT protocol race at the moment but many more protocols are getting introduced on a regular basis. Each protocol has its pros and cons depending on the nature of the communications. Does there really need to be only one protocol to rule them all? Of course not. In his session at @ThingsExpo, Chris Matthieu, co-founder and CTO of Octoblu, walk you through how Oct...
Sep. 26, 2016 08:45 PM EDT Reads: 2,169
In his keynote at 18th Cloud Expo, Andrew Keys, Co-Founder of ConsenSys Enterprise, provided an overview of the evolution of the Internet and the Database and the future of their combination – the Blockchain. Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life sett...
Sep. 26, 2016 08:45 PM EDT Reads: 3,416
Vidyo, Inc., has joined the Alliance for Open Media. The Alliance for Open Media is a non-profit organization working to define and develop media technologies that address the need for an open standard for video compression and delivery over the web. As a member of the Alliance, Vidyo will collaborate with industry leaders in pursuit of an open and royalty-free AOMedia Video codec, AV1. Vidyo’s contributions to the organization will bring to bear its long history of expertise in codec technolo...
Sep. 26, 2016 05:15 PM EDT Reads: 2,624
The vision of a connected smart home is becoming reality with the application of integrated wireless technologies in devices and appliances. The use of standardized and TCP/IP networked wireless technologies in line-powered and battery operated sensors and controls has led to the adoption of radios in the 2.4GHz band, including Wi-Fi, BT/BLE and 802.15.4 applied ZigBee and Thread. This is driving the need for robust wireless coexistence for multiple radios to ensure throughput performance and th...
Sep. 26, 2016 03:30 PM EDT Reads: 1,572
Enterprise IT has been in the era of Hybrid Cloud for some time now. But it seems most conversations about Hybrid are focused on integrating AWS, Microsoft Azure, or Google ECM into existing on-premises systems. Where is all the Private Cloud? What do technology providers need to do to make their offerings more compelling? How should enterprise IT executives and buyers define their focus, needs, and roadmap, and communicate that clearly to the providers?
Sep. 26, 2016 03:00 PM EDT Reads: 1,564
SYS-CON Events announced today that Commvault, a global leader in enterprise data protection and information management, has been named “Bronze Sponsor” of SYS-CON's 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Commvault is a leading provider of data protection and information management solutions, helping companies worldwide activate their data to drive more value and business insight and to transform moder...
Sep. 26, 2016 02:45 PM EDT Reads: 2,646