DataStax Developer Blog

Cassandra Conference in Tokyo 2012 Report

By Yuki Morishita -  December 12, 2012 | 0 Comments

On November 29, 2012, a Cassandra conference was held at Tokyo. This was the second annual conference run by the Cassandra community in Tokyo. This year, our CTO, Jonathan Ellis and I joined the conference as speakers. The conference started with a keynote speech from Jonathan, followed by 3 sessions each on a use case track and a technical track. More than 150 people signed up, the conference was full of interesting topics for both developers, current users as well as those who are considering using Cassandra. Today, I’d like to share what conference was like in this blog post.

Keynote speech – What’s new in Cassandra 1.2?

cassandra conference in Tokyo, keynote speech

Keynote from Jonathan

Jonathan gave his keynote speech about the new features in the Cassandra 1.2 release. His talk covered a wide variety of features Cassandra 1.2 introduces, including virtual node, “fat node” support, atomic batch to request tracing. The talk covered many new features not covered in his Cassandra Summit speech, so if you are interested, you can watch his keynote here.

CQL3, Backup and monitoring, and Data modeling with wide row…

cassandra conference in Tokyo, technical session

Technical session

The following technical sessions covered interesting topics for Cassandra developers.
For the first session of the technical track, I gave my presentation about CQL3(slides can be found here). The talk was based on blog posts we have written in this dev blog, including new collection support. I also talked about the new native protocol, and I could see many developers were interested in this new feature.
In the following session, Kazutaka Tomita gave his talk about Cassandra monitoring and backup. He showed how Cassandra stores its data, and steps for data backup and recovery when node goes down.
The last technical session was from Yongkun Wang of Rakuten Inc., Japan’s largest e-commerce company, and he talked about how their log management platform stores application logs and access logs generated from their own PaaS platform to Cassandra cluster. They chose Cassandra because of its linear scalability, and fast write performance. It was interesting to see how they transform application log in JSON format into Cassandra rows using CompositeType to construct wide row.

Use cases – e-commerce, cloud storage, web mail and more

There were also sessions on a use case track. Three companies showed their Cassandra use cases including cloud e-commerce platform, cloud storage, and web mail. Besides use cases covered in sessions, I could hear a lot of other use cases like collecting data from tons of sensors, a Cassandra cluster on Amazon EC2, and so on at the after party.

I was at last year’s conference also, but at the time, most of the people were just evaluating what Cassandra can do. This year, I could hear a lot of actual use cases that were in production. I can say that Cassandra is getting more and more attention here in Japan.



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