|By Tim Hinds||
|February 1, 2014 01:00 PM EST||
Agile software development isn't really a "new" trend anymore. I mean, the Agile Manifesto turns 13 years old next month and while that might be early adolescence in human years, it's downright ancient as far as trends in IT are concerned. However, one area that has yet to fully mature is the implementation of non-functional testing practices in a Continuous Testing sort of way that can keep pace with more Agile development teams. Load and performance testing definitely fall into that category. You might be a performance tester on a team that is just starting to do more iterative development or a more experienced Agile tester looking to add load and performance testing to your workflow; either way, you'll likely want to know what you're in for.
Agile development practices can help teams achieve faster time to market, adapt to changing requirements, provide a constant feedback loop, etc. The benefits of load and performance testing include determining how much load an application can handle before it crashes in production, when to add another server, when to reconfigure the network, where code needs to be optimized, etc. What is less well known is the fact that the combination of the two practices can lead to additional benefits that go beyond just the sum of the benefits of each practice, i.e. 1+1=3.
Some of these benefits include:
Avoiding Late Performance Problem Discovery
When load and performance testing are pushed off until the end of a development cycle, there is often little to no time for developers to make changes. This can cause teams to push back release dates and delay getting features out the door that customers need. Alternatively, if the issues are minor, teams may decide to proceed and launch the application into production while accepting the heightened risks. If the performance problems are more fundamental, they could even require painful architectural changes that could take weeks or months to implement.
Making Changes Earlier When They Are Cheaper
By including load and performance testing in Continuous Integration testing processes, organizations can catch performance issues early before they get much more costly to fix. Developers can instantly know that the new feature in the latest build has caused the application to no longer meet Service Level Agreements (SLAs). They can fix the problem then and there before it becomes exponentially more expensive. This is especially true on Agile teams when discovering a performance problem weeks later could mean that it actually occurred several builds ago which makes the task of pinpointing the root cause a nightmare.
Guaranteeing Users Get New Features, Not New Performance Issues
In some Agile organizations, changes are happening incredibly fast. It's possible for a new feature or some new functionality to get checked into source control, run through a Continuous Integration build, pass all of the automated tests, and get deployed to the production server in a matter of minutes. But if that code wasn't optimized to handle the number of simultaneous users seen at the worst peak times, it could cause the whole system to crash. Integrating load testing into the process before these changes are deployed to production can ensure that your users get all the goodies they want without the bad user experiences. This can save your company thousand or even millions in lost revenue from users switching to competitors' apps or bashing your brand because of the problems they experienced with your app.
In the same way that combining Agile with load testing can provide unique benefits, it can also present your teams with unique challenges they may not have experienced in the past.
Shorter Development Cycles Require More Tests in Less Time
Load and performance testing are usually pushed off until the end of a development cycle. With Agile, development, cycles are much shorter, and load & performance testing can get pushed off until the last day of a sprint or sometimes it's done every other sprint. This can often result in code being released without being adequately tested or user stories slipping to the next release once they have been tested. Conceptually the solution is to do the testing earlier in the development cycle, but that's easier said than done with many teams lacking the resources and tools to make it happen.
"Working" Code Does Not Always Perform Well
So much focus for developers on Agile teams is put on delivering "working" code, but is code really "working" if it fails when the application is under load? Should user stories and tasks really be marked as "done" if the code associated with them causes the application to crash with 100 users? What about 1,000? 100,000? The pressure to get code out the door is high, but so is the cost of having an application crash in production.
Developers Need Feedback NOW
Agile developers need to know more than just the fact that their code is causing performance issues: they need to know when their code started causing problems and what story they were working on when the issue started. It's a huge pain for developers to be forced to go back and fix code for a story they worked on weeks or months ago. It also means they can't spend time working on getting new features out the door. Detecting performance issues early in the cycle so you can deliver important feedback to developers quickly is crucial to saving costs.
Automating the Handoff from Dev to Ops Can Feel Risky
While DevOps and Continuous Deployment are still fairly young practices, the fear felt by operations teams that new changes in code will slow down or even crash the application when it is deployed in production has been around forever. Automating some of the testing in the Continuous Integration process can help to ease some of this fear, but without adequate performance testing included, the risk is still real. Ops teams know well the huge impact application downtime can have on the business.
As daunting as some of these challenges seem, don't lose sight of the benefits you'll receive. Load and performance testing successfully in an Agile way can save an organization a lot in costly bug fixes and could make a tester a hero to both development and operations teams alike.
Not quite sure how to get started? Stay tuned for my next blog on best practices for Agile load and performance testing.
Continuous processes around the development and deployment of applications are both impacted by -- and a benefit to -- the Internet of Things trend. To help better understand the relationship between DevOps and a plethora of new end-devices and data please welcome Gary Gruver, consultant, author and a former IT executive who has led many large-scale IT transformation projects, and John Jeremiah, Technology Evangelist at Hewlett Packard Enterprise (HPE), on Twitter at @j_jeremiah. The discussion...
Nov. 27, 2015 04:15 AM EST Reads: 704
In his General Session at DevOps Summit, Asaf Yigal, Co-Founder & VP of Product at Logz.io, explored the value of Kibana 4 for log analysis and provided a hands-on tutorial on how to set up Kibana 4 and get the most out of Apache log files. He examined three use cases: IT operations, business intelligence, and security and compliance. Asaf Yigal is co-founder and VP of Product at log analytics software company Logz.io. In the past, he was co-founder of social-trading platform Currensee, which...
Nov. 27, 2015 04:00 AM EST Reads: 183
The Internet of Things is clearly many things: data collection and analytics, wearables, Smart Grids and Smart Cities, the Industrial Internet, and more. Cool platforms like Arduino, Raspberry Pi, Intel's Galileo and Edison, and a diverse world of sensors are making the IoT a great toy box for developers in all these areas. In this Power Panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists discussed what things are the most important, which will have the most profound...
Nov. 27, 2015 02:30 AM EST Reads: 450
Discussions of cloud computing have evolved in recent years from a focus on specific types of cloud, to a world of hybrid cloud, and to a world dominated by the APIs that make today's multi-cloud environments and hybrid clouds possible. In this Power Panel at 17th Cloud Expo, moderated by Conference Chair Roger Strukhoff, panelists addressed the importance of customers being able to use the specific technologies they need, through environments and ecosystems that expose their APIs to make true ...
Nov. 27, 2015 02:00 AM EST Reads: 514
In today's enterprise, digital transformation represents organizational change even more so than technology change, as customer preferences and behavior drive end-to-end transformation across lines of business as well as IT. To capitalize on the ubiquitous disruption driving this transformation, companies must be able to innovate at an increasingly rapid pace. Traditional approaches for driving innovation are now woefully inadequate for keeping up with the breadth of disruption and change facin...
Nov. 27, 2015 01:30 AM EST Reads: 461
Growth hacking is common for startups to make unheard-of progress in building their business. Career Hacks can help Geek Girls and those who support them (yes, that's you too, Dad!) to excel in this typically male-dominated world. Get ready to learn the facts: Is there a bias against women in the tech / developer communities? Why are women 50% of the workforce, but hold only 24% of the STEM or IT positions? Some beginnings of what to do about it! In her Day 2 Keynote at 17th Cloud Expo, San...
Nov. 27, 2015 01:00 AM EST Reads: 555
Microservices are a very exciting architectural approach that many organizations are looking to as a way to accelerate innovation. Microservices promise to allow teams to move away from monolithic "ball of mud" systems, but the reality is that, in the vast majority of organizations, different projects and technologies will continue to be developed at different speeds. How to handle the dependencies between these disparate systems with different iteration cycles? Consider the "canoncial problem"...
Nov. 27, 2015 01:00 AM EST Reads: 421
PubNub has announced the release of BLOCKS, a set of customizable microservices that give developers a simple way to add code and deploy features for realtime apps.PubNub BLOCKS executes business logic directly on the data streaming through PubNub’s network without splitting it off to an intermediary server controlled by the customer. This revolutionary approach streamlines app development, reduces endpoint-to-endpoint latency, and allows apps to better leverage the enormous scalability of PubNu...
Nov. 27, 2015 01:00 AM EST Reads: 307
I recently attended and was a speaker at the 4th International Internet of @ThingsExpo at the Santa Clara Convention Center. I also had the opportunity to attend this event last year and I wrote a blog from that show talking about how the “Enterprise Impact of IoT” was a key theme of last year’s show. I was curious to see if the same theme would still resonate 365 days later and what, if any, changes I would see in the content presented.
Nov. 26, 2015 10:00 PM EST Reads: 397
It's been a busy time for tech's ongoing infatuation with containers. Amazon just announced EC2 Container Registry to simply container management. The new Azure container service taps into Microsoft's partnership with Docker and Mesosphere. You know when there's a standard for containers on the table there's money on the table, too. Everyone is talking containers because they reduce a ton of development-related challenges and make it much easier to move across production and testing environm...
Nov. 26, 2015 06:00 PM EST Reads: 578
Internet of @ThingsExpo, taking place June 7-9, 2016 at Javits Center, New York City and Nov 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with the 18th International @CloudExpo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world and ThingsExpo New York Call for Papers is now open.
Nov. 26, 2015 03:30 PM EST Reads: 526
With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo 2016 in New York and Silicon Valley. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be! Internet of @ThingsExpo, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 17th Cloud Expo and will feature technical sessions from a rock star conference faculty ...
Nov. 26, 2015 03:15 PM EST Reads: 524
We are rapidly moving to a brave new world of interconnected smart homes, cars, offices and factories known as the Internet of Things (IoT). Sensors and monitoring devices will touch every part of our lives. Let's take a closer look at the Internet of Things. The Internet of Things is a worldwide network of objects and devices connected to the Internet. They are electronics, sensors, software and more. These objects connect to the Internet and can be controlled remotely via apps and programs. ...
Nov. 26, 2015 02:15 PM EST Reads: 500
The Internet of Things (IoT) is growing rapidly by extending current technologies, products and networks. By 2020, Cisco estimates there will be 50 billion connected devices. Gartner has forecast revenues of over $300 billion, just to IoT suppliers. Now is the time to figure out how you’ll make money – not just create innovative products. With hundreds of new products and companies jumping into the IoT fray every month, there’s no shortage of innovation. Despite this, McKinsey/VisionMobile data...
Nov. 26, 2015 11:00 AM EST Reads: 446
Just over a week ago I received a long and loud sustained applause for a presentation I delivered at this year’s Cloud Expo in Santa Clara. I was extremely pleased with the turnout and had some very good conversations with many of the attendees. Over the next few days I had many more meaningful conversations and was not only happy with the results but also learned a few new things. Here is everything I learned in those three days distilled into three short points.
Nov. 26, 2015 10:00 AM EST Reads: 292
One of the most important tenets of digital transformation is that it’s customer-driven. In fact, the only reason technology is involved at all is because today’s customers demand technology-based interactions with the companies they do business with. It’s no surprise, therefore, that we at Intellyx agree with Patrick Maes, CTO, ANZ Bank, when he said, “the fundamental element in digital transformation is extreme customer centricity.” So true – but note the insightful twist that Maes adde...
Nov. 26, 2015 10:00 AM EST Reads: 417
DevOps is about increasing efficiency, but nothing is more inefficient than building the same application twice. However, this is a routine occurrence with enterprise applications that need both a rich desktop web interface and strong mobile support. With recent technological advances from Isomorphic Software and others, rich desktop and tuned mobile experiences can now be created with a single codebase – without compromising functionality, performance or usability. In his session at DevOps Su...
Nov. 26, 2015 09:45 AM EST Reads: 372
Nov. 26, 2015 09:30 AM EST Reads: 173
As organizations realize the scope of the Internet of Things, gaining key insights from Big Data, through the use of advanced analytics, becomes crucial. However, IoT also creates the need for petabyte scale storage of data from millions of devices. A new type of Storage is required which seamlessly integrates robust data analytics with massive scale. These storage systems will act as “smart systems” provide in-place analytics that speed discovery and enable businesses to quickly derive meaningf...
Nov. 26, 2015 09:30 AM EST Reads: 380
You may have heard about the pets vs. cattle discussion – a reference to the way application servers are deployed in the cloud native world. If an application server goes down it can simply be dropped from the mix and a new server added in its place. The practice so far has mostly been applied to application deployments. Management software on the other hand is treated in a very special manner. Dedicated resources are set aside to run the management software components and several alerting syst...
Nov. 26, 2015 08:00 AM EST Reads: 155