Introduction to WebSockets

Introduction to WebSockets

December 18, 2012

The WebSockets technology promises to fill a niche in web applications by enabling browsers and servers to exchange messages with high frequency, low latency and low bandwith requirements in full duplex mode. The WebSocket protocol is an IETF standard, the WebSocket API is almost standardized by the W3C, and the JSR-356 will deliver a Java API in Java EE 7. There are already implementations in node.js and in a number of Servlet containers and Java frameworks. The time is as good as ever to start digging into it and there is so much to consider — from getting familiar with the protocol and the API, to sorting through the choices on the browser and on the server side, practical challenges with browser support and network issues, and so on. Furthermore, WebSockets offer a messaging-style architecture that’s in sharp contrast to the RESTful architectures that connect the web today, so learning where to draw the line will be essential.

About the Speaker

Gunnar Hillert

Gunnar Hillert is a member of technical staff (MTS) at SpringSource, a division of VMware, Inc. He is a committer for Spring Integration, Spring AMQP and also contributes to the Cloud Foundry project. Gunnar heads the Atlanta Java Users Group and is an organizer for the DevNexus developer conference.

A native from Berlin, Germany, Gunnar has been calling Atlanta home for the past 11 years. He is an avid gardener specializing in anything sub-tropical such as bananas, palm trees and bamboo. As time permits, Gunnar works on his Spanish language skills and he and his wife Alysa are raising their two children tri-lingually (English, German, Spanish). Gunnar blogs at: http://blog.hillert.com/ and you can follow him on Twitter: https://twitter.com/ghillert

Posted in Meetings
AJUG Meetup

Building and Deploying 12 Factor Apps in Scala and Java

June 20, 2017

The twelve-factor app is a modern methodology for building software-as-a-service apps:

• Use declarative formats for setup automation, to minimise time and cost for new developers joining the project.

• Have a clean contract with the underlying operating system, offering maximum portability between execution environments.

• Are suitable for deployment on modern cloud platforms, obviating the need for servers and systems administration.

• Minimise divergence between development and production, enabling continuous deployment for maximum agility.

• And can scale up without significant changes to tooling, architecture, or development practices.

We will build a RESTful web service in Java and deploy the app to CloudFoundry. We will go over how to build a cloud manifest, how to keep our database credentials and application configuration outside of our code by using user-provided services and go over what it takes to build a 12 Factor application in the cloud. This presentation will be heavy on code and light on slides!

Location:


Roam Dunwoody

1155 Mount Vernon Highway NE
Atlanta, GA 30338 (map)

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