Web Application Performance Requirements Examples

In general, use simple and consistent language when discussing project requirements and formulation. Saying the same things in the same way avoids ambiguity and misunderstanding among project stakeholders. Simply put, a non-functional requirement is a specification that describes the operability of the system and the limitations that improve its functionality. These can be speed, safety, reliability, etc. We`ve already covered different types of software requirements, but this time we`ll focus on non-functional requirements and how to address and document them. If you need a general summary of the documentation and software planning, check out our video. Recognize architectural limitations. When developers deal with an enterprise solution or legacy system, there may be very few ways to improve performance without overhauling the entire architecture. The iOS app needs to support iPhone devices running os versions: meeting the needs of Internet users has never been more difficult than it is today.

People expect professional graphic design, interactive media, and fast lighting loading times. Of course, adding more elements to your website increases the likelihood that something will go wrong. The only way to determine what works for you is to monitor performance metrics. After all, developers often rely on visualizations or simulations – mockups – to give stakeholders a first glimpse of the software before development begins. Mockups such as menu structures and dashboards, and even rough prototypes, can reveal faulty or missing non-functional requirements. Developers can fix these issues before the final release. Some quality attributes can conflict with each other and force the company to compromise. One example is different types of performance requirements: high-speed performance is the ability to handle a large volume of transitions in a period of time. However, a higher throughput can degrade the response time as quickly as the software provides what the user has requested. In another example, the expected battery life of a hardware device can affect the strength of lighting on a visual screen and potentially affect the user experience. When defining performance requirements, consider the influence of dependencies.

A software project based on operating system services or access to an enterprise database must face the performance limitations of these separate components. For example, a bottleneck when accessing SQL negatively affects the response time of the software that returns the data. Design and test software with dependencies in mind. Like motorcycles or any type of machine, the software has its own non-functional requirements. Whether it`s a website, mobile app, or desktop app, it needs to have a number of quality attributes to meet the needs of end users. Identifying connection time issues can be difficult as it depends on many factors. Too much server traffic, whether from users or bots, can lead to increased connection times. Users in different geographic regions are likely to experience longer connection times. Simply monitoring your site`s performance metrics over time may not give you enough information to fix the issues. You can experiment with load testing tools such as LoadStorm or JMeter to simulate high server load. To ensure better connection time, you may need to upgrade your infrastructure.

You can also unload certain resources on a CDN or caching server. A development team must consider performance requirements as well as other types of quality attributes: reliability, robustness, security and ease of use, as well as availability, interoperability, security, efficiency and flexibility. Rough estimates during testing and production. You can search for benchmarks of similar products and features, but if this information is not available in the planning phase of the product, it will be difficult for you to specify the dimensions. So it`s likely that you`ll be able to articulate these requirements during testing and production before launch. However, you can emphasize the quality of the code during the development itself. This non-functional requirement ensures that all data on the system or its part is protected from malware attacks or unauthorized access. But there`s a catch. The lion`s share of non-safety requirements can be translated into concrete functional counterparts.

If you want to protect the admin panel from unauthorized access, define the login process and the various user roles as system behavior or user actions. Reader`s question: I need guidance on how to get the performance requirements of the company`s end users. And we need to know what is right to ask how websites, loading data files, search/retrieval from the database and reports (from request to return). If you`ve ever covered non-functional requirements, you may know that different sources and guides use different terminology. For example, the ISO/IEC 25000 standardization framework defines non-functional requirements as system and software quality requirements. BABOK, one of the most important sources of knowledge for business analysts, offers the term non-functional requirements (NFR), which is currently the most common definition. Nevertheless, these designations take into account the same type of material – requirements that describe operational qualities and not a behavior of the product. Start with Google recommendations for regular websites. Google is very sensitive to the loading times of desktop and mobile speed. So, if you`re looking for performance guides for regular websites that all users have access to, check Google`s page speed information.

The search engine takes into account several scenarios, including the type of connection, mobile or desktop loading, and the type of content displayed. Based on the sum of the factors, various performance evaluations are suggested that you can estimate for your website. This is especially important when setting landing page requirements, as Google can rate your page lower given its speed. The “Non-functional requirements” section therefore defines specific types of threats, which are addressed in more detail by functional requirements. But this is not always the case. If your security is based on certain encryption standards and methods, these standards do not directly describe the behavior of a system, but help engineers implement it. Learn how we improved WordPress performance and increased loading time from 532ms to 167ms by reducing the number of HTTP requests. These requirements are described in detail in process maps or use cases.

Performance and scalability. How fast does the system return the results? How much will this performance change with higher workloads? Google and other internet gatekeepers are also prioritizing fast web apps to provide a better user experience. In 2010, Google said that page speed would affect search rankings, making performance even more important for search engine discoverability. The company has even introduced AMP and other products to reduce loading times. Although these three types of requirements are usually documented separately, we group them into a single section because they address the same type of problem from different angles. Another thing to keep in mind with these requirements is that they are extremely difficult to express in terms of calculation. And, frankly, many system vendors don`t document them at all. Then.

Interface requirements are first identified in a context diagram and then elaborated in report details or user interface (UI) prototypes and storyboards. .