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Jul 19, 2011
Portland Java User Group: JSON Libraries
Oracle (Downtown Campus)

This month's topic: Comparing JSON libraries

JSON has become the de-facto data interchange format for Internet web services. We'll examine open source libraries that make it easy for a Java developer to serialize objects to JSON. This presentation will include a discussion of three popular Java libraries (, Jackson, and GSON ) as well as a popular Scala library (lift-json).

Speaker: Sean Sullivan

Sean is a software engineer specializing in web services development, mobile applications, and supply chain management systems. Sean works on e-commerce projects at Gilt Groupe's Portland office. Sean is an Apache Software Foundation committer and has contributed to various open source projects, including the OAuth Java library.

PJUG meetings start with some time to eat and socialize (pizza and beverages are provided), followed by the featured speaker, then Q&A, discussion, sometimes a drawing to give away swag. :)

Though we like knowing how many people to expect, you don't have to RSVP, on Upcoming or otherwise. Go ahead and just show up!

Many people also go for a drink and further discussion following the meeting, usually at Tree's restaurant in building lobby. (join our mailing list, linked from the website!)

Jan 20, 2016
Flying with Phoenix and Elixir

Have you heard of Phoenix? Phoenix is a framework for building HTML5 apps, API backends and distributed systems. Written in Elixir.

Seve Salazar of will walk us through creating a simple but real(wish)-world JSON API using Phoenix and deploying it to production as an OTP application. It will cover usage of Ecto, rendering JSON from a controller, integrating with StatsD using Exometer, and finally using edeliver to ship it to production.

Mar 21, 2017
Java User Group - "Spark and MapR Streams: A Motivating Example"
Jama Software, 135 SW Taylor, Suite 200, Portland, OR

Businesses are discovering the untapped potential of large datasets and data streams through the use of technologies for big data processing and storage. By leveraging these assets they’re creating a new generation of applications that derive value from data they used to throw away. In this presentation Ian Downard will discuss how to build operational environments for these types of applications with the MapR Converged Data Platform and he’ll walk through an example of a next-generation application that uses Java APIs for MapR Streams, Apache Spark, Apache Hive, and MapR-DB. We’ll see how these technologies can be used to join and transform unbounded datasets to find signals and derive new data streams for a financial scenario involving real-time algorithmic trading and historical analysis using SQL. We’ll also discuss how MapR enables you to run real-time data applications with the speed, reliability, and security you need for a production environment.

Ian Downard is a technical evangelist for MapR where he is focused on creating developer-friendly ways to use the MapR Converged Data Platform.

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