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Learning ronaldweinland.info for Mobile Application Development. Copyright . Did you know that Packt offers eBook versions of every book published, with PDF and ePub. Make use of ronaldweinland.info to learn the development of a simple yet scalable cross- platform mobile application. Learning ronaldweinland.info for Mobile Application Development - Sample Chapter - Free download as PDF File .pdf), Text File .txt) or read online for free. Chapter No
In short: with Node, you can push the database writes off to the side and deal with them later, proceeding as if they succeeded.
This observation can be utilized in Node. This could be done for real-time audio or video encoding , and proxying between different data sources see next section. An example: consider a server-side application communicating with third-party resources, pulling in data from different sources, or storing assets like images and videos to third-party cloud services.
Although dedicated proxy servers do exist, using Node instead might be helpful if your proxying infrastructure is non-existent or if you need a solution for local development. By this, I mean that you could build a client-side app with a Node. Switching to a real-time web-based solution would allow brokers to easily switch workstations or working places.
Soon, we might start seeing them on the beach in Florida.. You could be gathering real-time stats from your user, or even moving it to the next level by introducing targeted interactions with your visitors by opening a communication channel when they reach a specific point in your funnel. Imagine how you could improve your business if you knew what your visitors were doing in real-time—if you could visualize their interactions.
With the real-time, two-way sockets of Node. With the Node.
Note: Don't try to build hard real-time systems in Node i. Erlang is probably a better choice for that class of application.
Where Node. However, while possible, this request-response paradigm in which Node. There are arguments to be made for and against this approach. This eases development including hiring significantly.
Using Node. Relational DB tools for Node. On the other hand, Rails automatically provides data access setup right out of the box together with DB schema migrations support tools and other Gems pun intended.
Rails and its peer frameworks have mature and proven Active Record or Data Mapper data access layer implementations. As stated previously, Node. You can also run several Node. With clustering, you should still offload all heavy computation to background processes written in a more appropriate environment for that, and having them communicate via a message queue server like RabbitMQ. Even though your background processing might be run on the same server initially, such an approach has the potential for very high scalability.
Those background processing services could be easily distributed out to separate worker servers without the need to configure the loads of front-facing web servers. Tweet Remember: Node. Why use Node. If your use case does not contain CPU intensive operations nor access any blocking resources, you can exploit the benefits of Node. Welcome to the real-time web. Understanding the basics What is Node.
It's open-source, including Google's V8 engine, libuv for cross-platform compatibility, and a core library. By Stefan Buttigieg , Milorad Jevdjenic. Packt Publishing. Now you can get everything on Safari. To download books, visit site or your favorite retailer. See our FAQ or contact customer service:. Download Example Code.
Make use of Node. Chapter 7, Building User Interfaces, takes the template project that we created in the past few chapters and modifies it to something closer to what we envisioned by altering the appearance of the user interface.
In addition to this, we will also start experimenting with the Ionic project code to deeply understand what the project is made up of. Chapter 8, Making Our App Interactive, covers a lot of ground, going into the details of AngularJS and learning more about the interaction of the model, view, and controller. We will also see how to use the Cordova plugins and ngCordova in order to access native features. Finally, we will also have a look at how to create services and use them in order to serve data to the users.
Chapter 11, Working with Security, introduces the concept of security in mobile apps in the context of authenticating and authorizing local users. We will have a look at how to implement a common login feature, which contacts a remote server run by Node.
We then use this information in order to grant the user access to the rest of the application. Chapter 12, Working with Real-Time Data, covers how to set up WebSocket communication through the mobile app in order to subscribe to dynamic notifications from a server. We will elaborate on how this helps us develop truly dynamic applications, such as chat apps.
This chapter will further introduce the concept of push notifications, which will allow our app to get updates from a server on a dynamic basis. Preface Chapter 13, Building an Advanced Chat App, expands this mobile app and makes it more advanced by adding the features of chat rooms and notifications. In doing so, we will demonstrate how the concept of namespacing works on socket. Chapter 14, Creating an E-Commerce Application Using the Ionic Framework, brings together the knowledge that you have accumulated from this book and implements it in an easy-to-use Ionic framework that can be used in your very own projects.
Setting Up Your Workspace The overarching goal of this book is to give you the tools and know-how needed to efficiently construct modern, cross-platform solutions for your users. In this chapter, we will focus on the tools themselves, showing you how to bootstrap your development environment to tackle the challenges that we have in store for you in the remainder of the book. We will also give you a brief introduction to each tool in order to give you an idea about why they fit into your toolchain.
If any such detail seems unclear at this point, do not worry.