Author Archives: Ajitesh Kumar

Ajitesh Kumar

I have been recently working in the area of Data analytics including Data Science and Machine Learning / Deep Learning. I am also passionate about different technologies including programming languages such as Java/JEE, Javascript, Python, R, Julia, etc, and technologies such as Blockchain, mobile computing, cloud-native technologies, application security, cloud computing platforms, big data, etc. For latest updates and blogs, follow us on Twitter. I would love to connect with you on Linkedin. Check out my latest book titled as First Principles Thinking: Building winning products using first principles thinking

What is the definition of Software Quality?

Even before we try and define what is software quality, it may be a good idea to understand what is meant by term quality? Quality means different to different people. One may call a product or high services of high quality if it serves their needs. Thus, for some people, a cell phone can be of high quality if it provides sound of great quality. However, for others, the ability to browse through social network can be criteria of judging a cellphone (also called as smartphone) quality. To standardize, software quality may be defined as a set of characteristics can be used to measure the following: Outcome of interaction with …

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Posted in ISO Standards, Software Quality. Tagged with , .

How to Really Welcome Changing Requirements in Agile Environment

If you are one of those who is all set to start with agile development practices in your organization, check the following on how to deal with changing requirements which is one of the important specifications mentioned in Agile Manifesto. If you want your team to accept the idea of changing requirements (hard to digest in the beginning and so resistance) while they are developing the code, following are some of the things you would want to adopt/encourage as part of software development practices to really make team welcome the changing requirements: Training: Software quality with emphasis on how to write maintainable/easy-to-change code Object oriented design principles to ensure the …

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Posted in Agile Methodology. Tagged with .

At Heart, I am a Software Engineer

We start our career most probably with Trainee and then, once confirmed, gets promoted to Associate Software Engineer or Software Engineer. Our primary job responsibilities include analyzing the requirement, designing and developing the solutions in terms of one or more applications. Until first year of our career, we enjoy our roles and responsibilities as a software engineer. Somewhere after a year or so, we start discovering that one or more of our friend got promoted to something such as “Senior Software Engineer” or “System Analyst”. Hmm! Now that’s what starts disturbing us from the point of view of career progression. This is inspite of the fact that we haven’t yet …

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Posted in Software Engg. Tagged with .

Deliverables On-Time vis-a-vis Technical Debt Risk

When we are working under tough deadlines and there is mounted lot of pressure on software engineers to crank out features by features in a short time to meet business needs, there are high possibilities that software system end up getting high technical debt. Is it that delivery managers are not aware of above fact? Most of the times they are. However, they compromise on software quality against the need to take the product to the market. So far so good. However, they should make it a point to clear out some of those debt with a release just meant for that. These kind of releases are sometimes also called …

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Posted in Software Quality. Tagged with .

What is a Workflow?

While having a discussion with one of my colleagues, I found his interpretation of workflow quite interesting. There are myths around workflow. Many people relate workflow with software requirement requiring decision making such as approval/rejection etc. However, this is how workroom and workflow was described: As part of my daily activities, I may need to get into a workroom and see all that needs to be achieved on that day. Each of the tasks can be called as “output” that needs to be achieved. The “output” will require a set of input and, a set of activities to be performed in order to be achieved. The set of activities can …

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Posted in BPM. Tagged with .

How to Create Software Quality Metrics For Your Project

Well, if you are a software development partner for one or more of your customers, and you are looking forward for some of the following, you may want to adopt software quality metrics: Provide customers with software quality trending on various different software quality characteristic Monitor one or more projects for software quality What are various different things that you could measure for quantifying software quality? Defects Density (Functional Suitability): There are different data points you can use to measure defects density. Defects density can be defined to be one of the following: Number of defects divided by total lines of code written per sprint/release Number of defects divided by …

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Posted in Metrics, Software Quality. Tagged with .

How to Write Good Doc Comments for a Class/Method?

Well, software engineers love to jump to the code (minus document) once design is completed. Majority of them do not write the help text around the class or methods. Some of them do write but they do not provide enough information. There are various reasons for the lack of enough comments within a class. Some of them are lack of time, lack of writing/articulation skills etc. Following are some of the questions which would you like to answer as part of comments for method or a class: Functionality: What does the class or the method do? You may want to provide information regarding the business requirement that the component fulfills. …

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Posted in Operability, Software Quality. Tagged with , .

How to Write a Winner Design Document for Agile User Stories

When the development is based on agile methodology such as SCRUM and especially, distributed SCRUM, at some point, the need for design document becomes key to success of sprint delivery with as lesser technical debt as possible. In that regard, there has been questions around whether to have something such as design document at all. Many of those practicing agile as a developer just hate the idea of writing design documents and relate it with waterfall development model. They give the argument that a) in agile development, design have to change as we develop and b) thus, the design document may go obsolete in no time. To a great extent, I …

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Posted in Architecture, Design. Tagged with , .

A Quick Way to Identify Code with Low Testability

Following is a quick way to identify code with low testability and hence low maintainability: Take any specific public method of the class Count for number of decision points such as following: – If – For – While – Switch – Inline ifs If the number of decision points in a method is more than 15 or so, it could be taken as indication that it may get difficult to write unit tests covering all possible flows. Thus, the code will have lower testability. The number of decision points in a method is also used to define/measure cyclomatic complexity of the method, or more specifically, McCabe Cyclomatic Complexity. Thus, mathematically …

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Posted in Maintainability, Software Quality, Unit Testing. Tagged with .

5 Things to Consider while Gathering Requirements from your Customers

Most of the time, software engineers are primarily interested in understanding requirements only from functionality perspective or, more simply speaking, understanding the stated needs. However, many a times, the delighting experience is missed due to absence of one or more of following 5 software quality characteristics in software coding stage: Efficiency: This is also termed as “performance requirements” at the time of requirement analysis stage. This goes unspecified as customers are also not very much knowledgeable about how to specify efficiency requirements. Efficiency requirements include consideration of time and memory usage associated with the requirement. Security: Most of the times, software engineers are not very aware of various different security …

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Posted in Software Quality.

How to Write Re-usable Code

In my software quality sessions, one of my favorite questions had been “how to write re-usable code”. The most common answer has been following: Once one identified the re-usable components based on the functionality, once can write the components accordingly such that it can be reused. However, this argument required one to identify the reusable components at the design time. The question still remained. How would one write a code that can be termed as re-usable even if the component is not required to be reused at the moment? Another question that I ask is if it is possible to look at the code and say if this is a …

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Posted in Maintainability, Reusability, Software Quality. Tagged with .

Top 5 Software Code Quality Concerns Your Customers May Have

If you want to delight your customer with great software code quality or avoid software code quality concerns of your customer, following are top 5 areas you may want to take care of: Functionality Suitability: Following are three different areas your software code should address: Correctness Completeness Appropriateness Out of above, correctness and completeness can directly be monitored and measured using bug tracking mechanisms. And, it is responsibility of both, developers and testers to make sure that these sub characteristics are complied. Developers achieve it by writing good unit tests, and test engineers achieve it by doing various different form of testing. From metrics perspectives, defect density is the area …

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Posted in Software Quality. Tagged with .

Software Quality Review – Scribe OAuth Library

Scribe OAuth Library helps you do quick OAuth based integration with some of the following web applications: Google Facebook Twitter LinkedIn and many more. You could find further details on following page on github. Following will present information on different perspectives: Structure   Maintainability The duplication percentage isn’t very high. Duplication is one of the key criteria that reflects on the maintainability of the code. Higher the duplication, difficult is the code to maintain. Duplication is also considered as one of the code smells. Also, due to unavailability of unit tests in the source code bundle, I could not find the test coverage. Otherwise, test coverage depicts the testability of …

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Posted in Maintainability, Metrics, Operability, Review, Software Quality. Tagged with .

Different Kind of Architects

Are you one of them who get confused about what are different kind of architects? If yes, keep reading! Following are different kind of architects: Solution Architect: They are the people who architect business solutions to solve a set of business problems. They need to have in-depth knowledge about business in general. They also need to be very much aware of functioning of different strategic business units (SBU) in order to architect integrated solutions that may cut across different SBUs to solve the particular problem. They deal with business processes while working on the solution and a descriptive business process diagram is one of their key deliverables. They may be …

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Posted in Architecture.

Test-Along Development (TAD): Unit testing technique

While talking to one of the client stakeholder, I came across this interesting term as Test-Along Development. Following are two different techniques I came across as common way of writing unit test: Test-driven development where we write unit tests first and then write enough code to make unit tests pass Write unit tests at the end once you are done with the development. Both of the above techniques presented enough challenges to the software developers. Some of them are following: Test-driven development: In agile development, in 2 week sprints, the design took much longer than 2-3 days. Thus, doing test-driven development was found to lead carry-overs for sprint given on …

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Posted in Maintainability, Software Quality, Unit Testing. Tagged with , , .

They confuse between Module & Component

Ask software developers about what do they mean by a module and a component and, what is the difference between them? Ask them about how would they represent module or a component in their daily development activities? Most of the time the answer is quite confusing. Although they use these two words interchangeably, they remain confused on their actual meanings. Module can be defined as following: Represents a functionality Can be represented as a set of components Can have manifest file representing component configuration One or more modules make an application. Technically, a package can be termed as a module. There is something called as module oriented programming as well. …

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Posted in Maintainability. Tagged with , .