Includes testing the coding

What is Shift Left Testing? And what does it mean for DevOps?

In recent years, the term DevOps has become more of a buzzword for marketing, software products, and even job descriptions. Put simply, DevOps is an alternative framework within the Agile approach that aims to bring development and operations teams together. Historically, each department had its own, sometimes conflicting, goals. Developers create, design and innovate. Operations teams focus on infrastructure and “keep the lights on” with ongoing monitoring to ensure availability. Similarly, DevOps was specifically designed to allow for more collaboration, feedback, and agility between these departments. DevOps is also mentioned when talking about Continuous Integration and Continuous Deployment (CI / CD) and automation, but the fact that an organization uses CI / CD and automation doesn't automatically make them DevOps certified.

 

Load testing best practices for DevOps environments

If your teams are taking an outdated approach to load testing and monitoring, DevOps can quickly plunge you into a performance disaster. QA teams have to deal with frequent new release deployments. DevOps teams need an easy way to manage their tests, in addition to flexible monitoring to provide adequate insights.

Continuous stress tests.

There are too many changes that affect the user interface and can crash the load test. The first focus should be on running fully automated API tests and scheduling daily execution. Once key business processes are stable, you can add additional end-to-end tests to your test scenario.

Share valuable insights.

Involve your DevOps team in the results analysis activities. Do not practice hiding information. Share all load tests and monitoring results with your engineers to pin down the root cause of any problems.

Monitoring of all levels.

Shift links also means production-like monitoring on development and QA levels. You don't have time to continuously reproduce errors in agile development pipelines. Make sure you collect front-end, back-end, and infrastructure usage metrics around the clock for non-production phases.

Baseline and benchmark.

Continuous stress testing generates tons of data. Establish baselines and use benchmarks to identify deviations early in the cycle. The sooner you learn of slowdowns, the more time your development team will have to fix such issues.

 

Integration of performance testing into the Shift Left Methodology

Today's applications use multiple technologies, relying on huge third-party networks and CDNs. Add to this the fact that users can access your applications from anywhere in the world, from any number of devices, all with different connection speeds. That's a lot to consider when trying to give users a great experience all the time. Response times, quality and availability are critical factors that require attention before applications are pushed into production.

Once in production, your application or website must withstand hundreds or even thousands of concurrent users. Small, incremental changes to code can degrade performance, so the sooner you find performance-related errors the easier and cheaper to fix. In most cases, teams should be able to resolve performance issues within a day or two. Again, making these improvements is much easier than discovering them before deploying.

Ideally, once the code has passed the required functional tests and features have been reviewed and disabled, teams should run non-functional tests such as stress and load tests to see how well the functional test artifacts withstand virtual users. LoadView is an integral part of the shift links approach to testing, which enables users to allocate time, money, and optimized code and applications.

 

The LoadView platform: cloud-based load tests in real browsers

The LoadView platform is a flexible load test platform that can fix the problem of ineffective load patterns and simulates everything from log-based tests to real browser-based tests. It's completely cloud-based, so there's no need to set up and deploy internal load injectors, manage third-party cloud accounts, or worry about hardware or software requirements. Performance testing typically requires additional infrastructure and resources that some organizations may not be able to support. LoadView manages this for you through the platform.

LoadView is ideal for early testing of code or web services to compare performance characteristics as it can just turn it up and simulate a high load on the backend from a single load injector, saving you time and money compared to other tools. This makes it ideal for testing web API architectures like JSON, SOAP and REST. In addition, non-functional tests usually require longer set-up times and complex scripts, which developers and engineers need through knowledge of certain programming languages. This can sometimes be difficult to automate as they tend to only work in a proprietary ecosystem. This is not the case with LoadView.

 

Scripting Easy: The EveryStep Web Recorder

LoadView uses an easy-to-use script recorder called EveryStep Web Recorder. Users can easily create advanced scripted actions that simulate real-world user actions using your APIs, web applications, and websites. To check end-to-end response times for client-side applications, users can simply navigate through their test case and record every action. Understanding how much load an API or web app can handle in the early stages of development can help developers in these critical areas:

  • Determine response time baselines under specific user load numbers
  • Identifying performance bottlenecks
  • Find upper limits of your current systems for capacity planning
  • Analyze server performance (CPU, memory, bandwidth, hard drive I / O) and database response times

The recorder also supports over 40 popular desktop / mobile browsers and devices, as well as web technologies and programming languages ​​such as AJAX, HTML5, JavaScript, Flash, Silverlight and more. LoadView uses these scripts to run on-demand stress and load tests from more than 13 global locations (US, Canada, South America, Europe, and APAC) and to give test engineers real-world performance data from actual browsers. Remember, running an internal test can tell you how well your application or website is handling an increase in traffic from your own network, but it will never reflect real-world conditions. Applications and websites that are not properly tested and optimized can negatively impact conversions and ultimately sales.

 

LoadView: Flexibility for testing real-world scenarios

LoadView gives users the ability to balance the user load across geographic locations based on the percentage of traffic to your website. For example, if you know that a certain percentage of your customers and users are from a certain geographic location, you can select the specific test areas. The platform uses Amazon Web Services (AWS) and Azure Cloud Services to generate virtual users. In addition, users can take their load tests one step further by customizing the type of load curve. This gives test engineers even more flexibility depending on their unique scenario. LoadView users can choose from three different load curves:

Load Step Curve

    • Starts with a predefined number of concurrent users and gradually increases the load to see how your website can handle an increase in traffic and compare it to the expected traffic.

Goal-based curve

    • This type of load curve is useful if you have already set your throughput target or the number of visitors to your website during a fixed time interval. Ideal for validating SLA or non-functional requirements.

Dynamic adjustable curve

    • This test allows users to adjust the load while the test is running to reveal website or server capacity limits.

When the tests are complete, LoadView automatically generates reports that help teams measure the success of their key performance indicators (KPIs), such as: B. Number of concurrent users, errors, average response times, CPU usage, throughput, latency and more. These metrics are critical for developers, DevOps, and QA teams as they help uncover real-world bottlenecks that could potentially impact end-user performance.

 

After moving left, don't forget to move right

With all of the focus on shift links testing, it's hard to remember that there is another extremely important step in the process that is receiving less attention. After your application goes into production, you need to make sure that everything continues to run smoothly for your users. Dotcom-Monitor offers several monitoring solutions to ensure that your pages and applications continue to function and function properly.

Monitoring of web services

    • Uptime and performance of web services like HTTP / S, SOAP / REST and more

Website monitoring Monitoring

    • Web page performance in real browsers, identifying slowest and fastest elements over time

Web application monitoring Monitoring

    • Monitor complex web applications like AJAX, PHP, Ruby, Flash and more

Infrastructure monitoring

    • The functionality and performance of Internet servers and protocols such as HTTP / S, email, streaming media, VoIP, and more

These platforms allow users to set up ongoing monitoring based on custom thresholds and can alert specific people or teams when errors occur so they can work on fixing issues before they potentially affect many more users.

 

Shift Left Testing: Good for Business and Peace of Mind

In summary, both the left and shift-right concepts can be extremely valuable, not just within the software development cycle, but in other departments and industries as well. For example, product managers or customer experience managers switch to the left and are increasingly being paired with actual customers in order to receive continuous feedback. In this way, companies can become more agile and get closer to the source of information and feedback in order to better understand their customers. Just think about it. Wouldn't you rather work with or continue to do business with a company that values ​​your input? So when you hear someone say "move links" or "test early and often," it's not just a fancy catchphrase that they're throwing around. It's a critical piece of the customer experience puzzle and one that you should always keep in mind. Not only will your users and customers be happy, you'll gain efficiency, get better results, and give you and your business peace of mind.