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Software Design Patterns for Web Application Development

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Software Design Patterns for Web Application Development
Mar 27 2016

    Developing large robust web applications require highly adaptable and maintainable code. The application should easily accept technology changes, have readable and maintainable code, and should have ability to adapt new features and changes in UI. Over time programmers have developed a set of best practices for developing web applications which are also called design patterns. These design patterns will not help solve all your problems, but will definitely help you design better code. Besides they are common jargon used by Developers. In this post we will discuss popular software design approaches used to develop Web Applications.

    Adapter Pattern: The Adapter pattern is used while converting an interface of a set of classes that we need to use to a different but preferred interface. This pattern decouples the classes from the interface of the consumed class. It is frequently used in web projects as a way to make use of a database API (such as PDO or mysqli) without coupling the pages over and over to that database API. 

    Simple Factory pattern: Simple Factory pattern is used when a type of dependency slips into the client code from a the particular concrete adapter. A factory is a special class that creates subclasses so that clients are not coupled to specific subclasses or implementations. There are several different types of Factory pattern. However two popular Factory patterns are the Factory Method and the Abstract Factory. The Simple Factory pattern is a simpler alternative to these other two factory patterns.

    Template Method pattern: The Template Method pattern is one of the most essential web development pattern. Many object-oriented developers often use this pattern without even realizing that it is a pattern. In this pattern, one defines an algorithm in an abstract superclass and defers the algorithm steps that can vary to the subclasses. For instance, Our data access layer contains a variety of data access objects whose main responsibility is to retrieve information from their associated database table. The main algorithms for retrieving data are defined within the abstract superclass for all the data access objects. But since each table will have different SQL SELECT statements for these tasks, each concrete subclass implements its own version of the template methods.

    Dependency injection pattern: Dependency Injection has become one of the most essential software design patterns and is also considered as one of the simplest. It was first identified and named by Martin Fowler. Its purpose is to reduce the number of dependencies within a class, by passing (injecting) potential dependencies into a class rather than hard-coding them into the class.

     

    Data and Domain patterns

    For larger problems like how should one design a program’s interaction with a database or implement business rules, many in the software development community have been focusing on so-called enterprise patterns, which provide best practices for the common type of big-picture architectural problems faced by application developers. Now we will introduce some of the enterprise patterns as they apply to the context of web development.

    Table Data Gateway pattern: Fowler’s Table Data Gateway pattern is essentially the same as what is also called a data access object. A gateway is simply an object that encapsulates access to some external resource. Thus a table data gateway provides CRUD access to a database table or perhaps joined tables.

    Domain Model pattern: For programmers who are familiar with object-oriented design, the Domain Model pattern is a natural one. In it, the developer implements an object model: that is, a variety of related classes that represent objects in the problem domain of the application. The classes within a domain model will have both data and behavior and will be the natural location for implementing business rules. Often the domain model will be similar to the database schema, in that the different domain classes will mirror the tables in the underlying database, while properties within the class will mirror the fields within the table. A proper domain model will be organized around design principles and not around a database schema.

    Active Record pattern: In the Active Record pattern, the domain objects have the responsibility for retrieving themselves from the database, as well as responsibility for updating or inserting data into the underlying database. In this pattern, the properties of each class must mirror quite closely the underlying table structure. The advantage of the Active Record pattern is that it makes the client code quite clean and clear. Its disadvantage is that it closely couples the domain object’s design to the underlying table. For many PHP projects this might not be that significant a drawback, but for larger more complex applications, this coupling may be limiting. As well, the Active Record pattern creates classes that are in cohesive in that they contain both domain logic and data access logic. The need for static methods is also a potential problem because they are more difficult to unit test.

     

    Web Development Company, California (Los Angeles)

    HammockWeb is a premium web development company in California. We have expertise developing web applications and websites using best software design patterns. We have developed a wide range of robust and large applications.

    If you are looking for a Web development company Los Angeles, then do contact us.


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    Unless they’re coming in from one of your amazing blog posts (you do have a blog, right?), your home page will be the first impression your future client or customer gets of you. It may be the only time they ever look at your business. You don’t want them to run screaming off into the distance. You want them to, you know, stick around and eventually maybe even buy your stuff or hire you. Here are some tips from a leading web design agency in Los Angeles, for designing a home page that generates leads. 

    Make It Professional

    The first step to designing a home page that generates leads is to make sure it looks professional. I’m sure you already know that you don’t want a website that looks like it’s designed by a kindergartener (although these days…)

    This isn’t the 90s. Slapping fifty different colors down on a black background with three JavaScript popups is a thing of the past. But you also can’t just stick your text into the basic WordPress theme and call it a day.

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    Before you spend some bucks, though, do some research. Who are your competitors? Better yet, which of your competitors seem to be doing good business. What does their website look like? What do other professional sites in your field look like?

    Take some notes. Make some sketches. Yes, I know. It’s like school, but it’ll pay off in the end. You don’t want other people getting your business, just because your website looks sketchy.

    Now look at your notes. Can you make your website with a WordPress theme? Great! Go ahead!

    Need a fancier website. Find WordPress intimidating? Hire a web development firm. You’ll thank yourself later.

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    •        Leave some white space

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    This may seem like a no-brainer, but when you're designing a home page, you should definitely make sure your potential customers or clients know what you do or what you sell. I don’t just mean something vague like “web designer.” Be specific, because your future customers are looking for specifics. Let them know you’re a web designer specializing in e-commerce sites or a ranch that sells, specifically, organic free-range dinosaurs.

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    This is called social proof. Dr. Robert Cialdini did a study (see a write-up of it) where he encouraged people to reuse towels in a hotel. Cialdini found that more people reused towels if told that other people also reused towels than reused towels if told that reusing towels would mean the hotel would donate money to help the environment. In other words, social proof was an even more powerful motivator than altruism.

    Where do you get testimonials? Well, from your clients and customers. It’s not rude to ask. If people like your work, I’ve found they’ll be eager to give you a bit of help.

    Put Your Address and Telephone Number

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    Make Sure Your Website is Responsive

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    Your home page is important. It's not just something you throw up because you're supposed to have a main page! It's not just a welcome mat. It is, in a way, your front window into the world. And, with a little thought, a home page can be designed so that it generates leads and brings you more business

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    A website that makes a visitor feel like it was designed just for them, does wonders in retaining those users and making them come back for more. Navigation, text, media and graphics are the primary factors which should be kept in mind while designing a website.

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    Be Responsive

    The saying “content is like water” is the basis of responsive web designs. Designing a website that is responsive means that content can be viewed easily in all devices—laptops, mobiles, tablets, you name it. Getting a responsive design for your website ensures that your visitors are not annoyed if they have to constantly zoom in to read the content while using a smartphone.

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    Furthermore, Google has changed its algorithm and now ranks your website on the basis of how mobile-friendly it is. So if businesses want to improve the ranking of their websites, going mobile is a great option.

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    Moreover, with a high page load time, businesses suffer more today than they did a few years back. In 2010, if a page took six seconds to load, it suffered a conversion hit of -40%. Today, the same time will take a hit of -50%. Users expect a sleek and friendly webpage where they don’t have to wait too long and it is up to the web development company to provide them that.

    You can use GT Metrix, Website Grader, and Google’s PageSpeed Insights to analyze your site’s speed and make fixes wherever required. Enabling browser caching and compression and optimizing images will minimize your page load time to a great extent.

    Be Visually Responsible

    Images are a great way to tell a story without words. Successful websites make the use of images on their home pages to tell the visitor what the business is about and what the visitor will get out of it. Too much of a good thing, however, is dangerous.

    As we’ve mentioned above, images hog a lot of bandwidth, which results in a high page load time for a website. To counter that, images should be scaled down or compressed so that bandwidth remains free and visitors to your website can enjoy a great website-user experience.

    Another thing to keep in mind, while designing a website, is that images should not be stock photos. Instead, use images of your own. Remember, the purpose of a website is to brand your image, and it won’t be possible if you are not using images of your own company/products.

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    When you are hiring a website development company to design a corporate website, discuss your content with them and the design for the navigation bar. Design director Daniel Alves comments that the navigation bar is “the most important design element on a website.”

    In order to create an interactive navigation bar, keep the design simple and easy-to-read. Since people read in a left-to-right pattern, it is advised to keep your products and services on the left of the bar and the “actions” on the right.

    Sharing is Caring

    Social sharing is the new boom. Integration of social media sharing buttons gives you the opportunity to make your visitors your advertisers. The more the people share your web pages on social networks, the more your exposure is increased. So embrace the practice of social media sharing and watch as the traffic on your website multiplies!

     

    Bottom line: Keep the user’s perspective in mind. If there is anything that annoys you while browsing sites, chances are that they will annoy other users, too, so it is best to employ those methods which help the user find exactly what they are looking for on your site without getting lost or overwhelmed by your website navigation. A user-friendly website will entice new visitors and turn them into regulars.