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Django RESTful web services
Django is a Python web framework that makes the web development process very easy. It reduces the amount of trivial code, which simplifies the creation of web applications and results in faster development. It is very powerful and a great choice for creating RESTful web services. If you are a Python developer and want to efficiently create RESTful web services with Django for your apps, then this is the right book for you. The book starts off by showing you how to install and configure the environment, required software, and tools to create RESTful web services with Django and the Django REST framework. We then move on to working with advanced serialization and migrations to interact with SQLite and non-SQL data sources. We will use the features included in the Django REST framework to improve our simple web service. Further, we will create API views to process diverse HTTP requests on objects, go through relationships and hyperlinked API management, and then discover the necessary steps to include security and permissions related to data models and APIs. We will also apply throttling rules and run tests to check that versioning works as expected. Next we will run automated tests to improve code coverage. By the end of the book, you will be able to build RESTful web services with Django.
eBook
A fuzzy-based framework for evaluation of website design quality index
An unrecognized significance of the web acts as a driving force for the massive and rapid growth of websites in each domain of social life. For making a successful website, it is necessary for developers to embrace appropriate web testing and evaluation methodology. Some valuable works in the past have striven to appraise the web applications quantitatively. Various parameters have been considered which are again sub-parameterized to measurable indicators. But their weighing criterion has not been appropriately taken into account according to the domain of the website. Also, the relative degrees of interactions among parameters have not been taken into consideration. The work presented in this paper aims at describing a framework, Quality Index Evaluation Method to gauge the design quality of a website in the form of index value. An automated tool has been designed and coded to measure the metrics quantitatively. A weighing technique based on Fuzzy-DEMATEL (Decision Making Trial and Evaluation Laboratory Method) has been applied on these metrics. Fuzzy trapezoidal numbers have been used for assessment of parameters and the final design quality index value. To verify the use of framework in different website domains, it has been exercised on eight academic (four institutional and four digital libraries), five informative and four commercial websites. The results have been validated through the most widely used method in literature, i.e., user judgment. Opinions of users for each website have been quantified and aggregated with fuzzy aggregation technique. Experimental results show that the proposed framework provides accurate and consistent results in very less time.
Journal Article
Scalability patterns : best practices for designing high volume websites : design your website to handle a million hits a day
In this book, the CEO of Cazton, Inc. and internationally-acclaimed speaker, Chander Dhall , demonstrates current website design scalability patterns and takes a pragmatic approach to explaining their pros and cons to show you how to select the appropriate pattern for your site. He then tests the patterns by deliberately forcing them to fail and exposing potential flaws before discussing how to design the optimal pattern to match your scale requirements. The author explains the use of polyglot programming and how to match the right patterns to your business needs. He also details several No-SQL patterns and explains the fundamentals of different paradigms of No-SQL by showing complementary strategies of using them along with relational databases to achieve the best results. He also teaches how to make the scalability pattern work with a real-world microservices pattern. With the proliferation of countless electronic devices and the ever growing number of Internet users, the scalability of websites has become an increasingly important challenge. Scalability, even though highly coveted, may not be so easy to achieve. Think that you can't attain responsiveness along with scalability? Chander Dhall will demonstrate that, in fact, they go hand in hand. What You'll Learn Architect and develop applications so that they are easy to scale. Learn different scaling and partitioning options and the combinations. Learn techniques to speed up responsiveness. Deep dive into caching, column-family databases, document databases, search engines and RDBMS. Learn scalability and responsiveness concepts that are usually ignored. Effectively balance scalability, performance, responsiveness, and availability while minimizing downtime.
Book
User Expectations and Rankings of Quality Factors in Different Web Site Domains
In the emerging electronic environment, knowing how to create customercentered Web sites is of great importance. This paper reports two studies on user perceptions of Web sites. First, Kano's model of quality was used in an exploratory investigation of customer quality expectations for a specific type of site (CNN.com). The quality model was then extended by treating broader site types/domains. The results showed that (1) customers' quality expectations change over time, and thus no single quality checklist will be good for very long, (2) the Kano model can be used as a framework or method for identifying quality expectations and the time transition of quality factors, (3) customers in a Web domain do not regard all quality factors as equally important, and (4) the rankings of important quality factors differ from one Web domain to another, but certain factors were regarded as highly important across all the domains studied.
Journal Article
Exploring Human Images in Website Design: A Multi-Method Approach
Effective visual design of e-commerce websites enhances website aesthetics and emotional appeal for the user. To gain insight into how Internet users perceive human images as one element of website design, a controlled experiment was conducted using a questionnaire, interviews, and eye-tracking methodology. Three conditions of human images were created including human images with facial features, human images without facial features, and a control condition with no human images. It was expected that human images with facial features would induce a user to perceive the website as more appealing, having warmth or social presence, and as more trustworthy. In turn, higher levels of image appeal and perceived social presence were predicted to result in trust. All expected relationships in the model were supported except no direct relationship was found between the human image conditions and trust. Additional analyses revealed subtle differences in the perception of human images across cultures (Canada, Germany, and Japan). While the general impact of human images seems universal across country groups, based on interview data four concepts emerged—aesthetics, symbolism, affective property, and functional property—with participants from each culture focusing on different concepts as applied to website design. Implications for research and practice are discussed.
Journal Article
The Effectiveness of Online Shopping Characteristics and Well-Designed Websites on Satisfaction
Electronic commerce has grown rapidly in recent years. However, surveys of online customers continue to indicate that many remain unsatisfied with their online purchase experiences. Clearly, more research is needed to better understand what affects customers' evaluations of their online experiences. Through a large dataset gathered from two online websites, this study investigates the importance of product uncertainty and retailer visibility in customers' online purchase decisions, as well as the mitigating effects of retailer characteristics. We find that high product uncertainty and low retailer visibility have a negative impact on customer satisfaction. However, a retailer's service quality, website design, and pricing play important roles in mitigating the negative impact of high product uncertainty and low retailer visibility. Specifically, service quality can mitigate the negative impacts of low retailer visibility and high product uncertainty in online markets. Website design, on the other hand, helps to reduce the impact of product uncertainty when experience goods are involved.
Journal Article