Why Agile and Scrum Matter

Changes is constant, software development as well. Do you know the development of mobile phones, starting from Motorola DynaTAC (1973) to Iphone 6 (2014). How about the software? The new versions are released with new improvements.

Software is not always able to automatic repairing. Therefore, software should be changed frequently and we need responding to changes.

source: http://answers.microsoft.com/

In working software today, how about customers' collaboration or requirements?

We ignore the fact that many customers don't know what they want.
We ignore the fact that when they know what they want, they can't describe it.
We ignore the fact the even when they can describe it, they often a proposed solution rather than a real need.
We ignore, that a lot of customers give us a solution but not the problem.

source: http://accelerateddevelopment.blogspot.com/

And, in working process, earlier founded bugs are cheaper.

Manifesto for Agile Software Development:

Individual and interaction over processes and tools
Working software over comprehensive documentation
Customer collaboration over contract negotiation
Responding to change over following a plan.

Scrum is an iterative and incremental agile software development methodology for managing product development. Agile is the way to think about responsiveness to changes and Scrum is a framework for increasing the speed and feedback loop.

Waterfall vs Scrum:

Waterfall process

Scrum process

source: https://en.wikipedia.org/

Rather than doing all of one thing at a time, Scrum teams do a little of everything all the time.

Twelve Agile Principles:

1. Produce Value Early	7. Working software
2. Welcome Changes	8. Sustainable development
3. Iterative Delivery	9. Technical excellent
4. Daily Business Collaboration	10. KISS – Smart, Sexy
5. Trust motivated team	11. Self-Organized team
6. Face to face	12. Reflect, Adjust, Adapt

Things are fit for Scrum:

	Agile	Lean	Kanban	Scrum	XP
Type	The way to THINK	Production PRACTICE	METHOD	FRAMEWORK	Technical PRACTICE
Goal	Responsiveness to changes	Reducing waste	Maximize the flow	Increase the speed and feedback loop	Improve software quality
Implementation	- Agile manifesto - 12 Agile Principles	With principles and practices	Whiteboard	Sprint	- TDD - Paring - Swarming

References:

[1]. "Fit for Scrum" course - Mr. Sebastian Sussmann - CIO, Axon Active Vietnam
[2]. http://www.agilemanifesto.org/
[3]. http://www.agilemanifesto.org/principles.html

Comments

Creating a Chatbot with RiveScript in Java

Motivation "Artificial Intelligence (AI) is considered a major innovation that could disrupt many things. Some people even compare it to the Internet. A large investor firm predicted that some AI startups could become the next Apple, Google or Amazon within five years" - Prof. John Vu, Carnegie Mellon University. Using chatbots to support our daily tasks is super useful and interesting. In fact, "Jenkins CI, Jira Cloud, and Bitbucket" have been becoming must-have apps in Slack of my team these days. There are some existing approaches for chatbots including pattern matching, algorithms, and neutral networks. RiveScript is a scripting language using "pattern matching" as a simple and powerful approach for building up a Chabot. Architecture Actually, it was flexible to choose a programming language for the used Rivescript interpreter like Java, Go, Javascript, Python, and Perl. I went with Java. Used Technologies and Tools Oracle JDK 1.8...

Styling Sort Icons Using Font Awesome for Primefaces' Data Table

So far, Primefaces has used image sprites for displaying the sort icons. This leads to a problem if we want to make a different style for these icons; for example, I would make the icon "arrow up" more blurry at the first time the table loading because I want to highlight the icon "arrow down". I found a way that I can replace these icons with Font Awesome icons. We will use "CSS Pseudo-classes" to achieve it. The hardest thing here is that we should handle displaying icons in different cases. There is a case both "arrow up" and "arrow down" showing and other case is only one of these icons is shown. .ui-sortable-column-icon.ui-icon.ui-icon-carat-2-n-s { background-image: none; margin-left: 5px; font-size: 1.1666em; position: relative; } .ui-sortable-column-icon.ui-icon.ui-icon-carat-2-n-s:not(.ui-icon-triangle-1-s)::before { content: "\f106"; font-family: "FontAwesome"; position: ...

Junit - Test fails on French or German string assertion

In my previous post about building a regex to check a text without special characters but allow German and French . I met a problem that the unit test works fine on my machine using Eclipse, but it was fail when running on Jenkins' build job. Here is my test: @Test public void shouldAllowFrenchAndGermanCharacters(){ String source = "ÄäÖöÜüß áÁàÀâÂéÉèÈêÊîÎçÇ"; assertFalse(SpecialCharactersUtils.isExistSpecialCharater(source)); } Production code: public static boolean isExistNotAllowedCharacters(String source){ Pattern regex = Pattern.compile("^[a-zA-Z_0-9_ÄäÖöÜüß áÁàÀâÂéÉèÈêÊîÎçÇ]*$"); Matcher matcher = regex.matcher(source); return !matcher.matches(); } The result likes the following: Failed tests: SpecialCharactersUtilsTest.shouldAllowFrenchAndGermanCharacters:32 null A guy from stackoverflow.com says: "This is probably due to the default encoding used for your Java source files. The ö in the string literal in the J...

Sharing a virtualenv across several Python projects using Pipenv

There is a standard library for all projects in Python. However, several projects don’t always have the same dependencies all the time. That is where virtual environments come to play. You can follow this official document to use two separated tools virtualenv and pip to fulfill that need. My preferred alternative is to use pipenv . Pipenv is easy to use and convenient. The following are my steps to make a shared virtualenv for my all projects which requires the same dependencies. Step 1. Create an isolated virtualenv. python -m venv my-shared-env Step 2. Create a symbolic link to the created virtualenv. cd project_1 ln -s ~/.local/share/virtualenvs/my-shared-env .venv I have encountered the following issue at step 1. FileNotFoundError: [Errno 2] No such file or directory: '{my_project_path}/.venv/bin/pip': '{my_project_path}/.venv/bin/pip' The root cause was I tried to create virtualenv by running pipenv install and renaming the generated virtualenv to ...

Automating deployment and managing apps on OpenShift

Previously, we maintained OpenShift templates for deploying apps in development environments as well as delivering these templates to our customers for their on-prem deployment. Customers who refer to our templates (as well as documentation) have their own configuration management tools to automate the deployment such as ArgoCD and FluxCD. My son's buildings Our developers usually modify templates (YAML) directly on OpenShift for testing and then adjust the corresponding templates stored in the Git repository in Bitbucket. This sometimes causes an issue that delivered templates are incorrect because: - Developers forget to update the templates in Git repositories. - Developers don’t test the templates Therefore, our goal was to integrate a tool into our CI/CD that can automate and manage the configuration of OpenShift apps. The delivered templates should be the ones that are able to run on our OpenShift with the following purposes: - Automate deployment from templated in Git repos...

vhandit

Search This Blog