Zachary Kessin - Building Web Applications with Erlang [2012, PDF, ENG]

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