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Data Storage at Librato with Dave Josephsen

For this meetup, we are excited to be joined by Dave Josephsen, Developer Evangelist over at Librato to share his experience with data storage and how Librato uses Cassandra.

What You'll Learn at this Meetup:

Librato runs a distributed multi-tenant time-series data storage, analysis, and alerting platform as a service. In this talk we describe our internal data processing and storage infrastructure, which relies heavily on Apache’s Storm and Cassandra projects to process over 200,000 writes per second and store nearly 10 billion data samples. We give infrastructure details, recounting our initial design decisions as well as various scaling challenges that have forced us to refactor our storage designs. Finally we live-demo our storage infrastructure dashboards and relate the system and application metrics that we’ve found useful in monitoring Cassandra for performance and reliability.

We hope to see you there!

About Dave Josephsen:

Dave Josephsen is the Developer Evangelist at Librato and author of various books and columns[1] about systems monitoring. At Librato he hacks on tools and documentation, blogs about statistics, systems monitoring, alerting, metrics collection and visualization, and generally does anything and everything he can think of to help engineers close the feedback loop in their systems.

[1] Dave's publications pages:

Also a big thank you to Infor PeopleAnswers for hosting!

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  • Geoff B.

    Really enjoyed your pragmatic overview of your company's use of Cassandra, David. Thx again!

    April 25, 2014

  • Alex S.

    It was awesome.

    April 25, 2014

  • Dave J.

    Hey guys, we talked a little bit about the size of our C* instances and I wasn't sure what size they were. I followed up with my team and found out that we're currently using hi1.4xl's and m2.4xl's Thanks for lending me the soapbox


    April 25, 2014

  • Ramesh

    Was informative.

    April 25, 2014

  • Elena

    Thanks everyone attending, we've just started!

    April 24, 2014

  • Rafael C.

    I am away in St Louis at a customer site and will not be able to attend todays meetup.

    April 24, 2014

    • Lina T.

      no worries Rafael! Looking forward to your presentation next month :)

      April 24, 2014

    • Elena

      Ah, you will be missed, Rafael. Good luck, see you next month!

      April 24, 2014

  • Darrell B.

    Sharing use cases is a great topic in general for the group. Look forward to hearing about Librato's use case.

    March 28, 2014

  • Elena

    Looking at the publication page, that's pretty impressive! Plus we use Nagios to monitor our system, so that presentation seems to be very interesting.

    March 28, 2014

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