[valeri[µ]]

Building Web Applications with Erlang


Год: 2012
Автор: Zachary Kessin
Издательство: O'Reilly Media
ISBN: 978-1-4493-0996-1
Язык: Английский
Формат: PDF
Качество: Изначально компьютерное (eBook)
Интерактивное оглавление: Да
Количество страниц: 154
Описание:Why choose Erlang for web applications? Discover the answer hands-on by building a simple web service with this book. If you’re an experienced web developer who knows basic Erlang, you’ll learn how to work with REST, dynamic content, web sockets, and concurrency through several examples. In the process, you’ll see first-hand that Erlang is ideal for building business-critical services.Erlang was designed for fault-tolerant, non-stop telecom systems, and building applications with it requires a large set of skills. By the end of the book, you’ll have the information you need to build a basic web service and get it running. Explore the power of Erlang and REST for building web services
Serve static and dynamic content with the Yaws web server
Use different methods for outputting data to user, such as encoding Erlang data structures into JSON or XML
Build an application to listen for HTTP requests, process them, store data, and return useful data
Go beyond the request-response model—push data to clients with web sockets
Use Erlang and Yaws to stream data from the server to a client

Chapter 1 : Building Scalable Systems with Erlang and REST
Why Erlang?
Why Web Services? Why REST?
New Opportunities for Scaling and Resilience

Chapter 2 : Getting Started with Yaws
Working with Yaws
Dynamic Content in Yaws
Templates
Logging

Chapter 3 : Appmods - Dynamic Content in Yaws
Appmod Configuration
When the URI Does Not Correspond to a File
Cookies
Session Handling
Access Control
Interacting with Erlang Services and Business Logic Layers

Chapter 4 : Implementing REST
Decoding a Request
Response and Headers
Building the Response
Responding to the REST Request
A Full Example

Chapter 5 : File Upload
The File Upload Request
Saving to Disk
Putting It All Together
Storage in a Distributed System
Saving to Amazon S3

Chapter 6 : WebSockets
The WebSocket Request
Basic WebSocket Handler
Advanced WebSocket Handler

Chapter 7 : Streaming
Simple Streaming

Chapter 8 : Using the HTTP Client
Making a Request
Using OAuth

Chapter 9 : Building an Application with OTP
Directory Structure
Building an Application Server
The Generic Server
The Multicast Server
Interfacing the Server with the Web
Some Client-Side Code
Let’s Have Some Adult Supervision Around Here!
A Little Optimization
Bundling as an Application
The App File
Wrapping Up OTP

Appendix : Installing Erlang and Yaws

Appendix : Beyond Yaws
Web Servers
Web Frameworks

Appendix : Interfacing with Ruby and Python
Ruby
Python

Appendix : Using Erlang with Emacs
Distel
Flymake Mode
Gen Server Template