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William Zola presents The (only) Three Reasons for Slow MongoDB Performance

William Zola presents "The (only) three reasons for slow MongoDB Performance.


7:00 PM Meet, Greet & Eat

7:30 PM Main Presentation

Followed by Q&A


The MongoDB Support team diagnoses and resolves dozens of performance-related issues each week.  In this talk, William Zola will describe the only three causes of slow MongoDB performance, how to detect which one you're having, and will outline what to do about each one. 


William is a Member of Technical Staff at MongoDB, Inc.  He first started in Technical Support in 1988, when he worked his way through college doing Tech Support..  Since then he's worked throughout Silicon Valley as a Senior Support Engineer for companies both large and small.  During his career, William has supported developers, end users, and DBAs in a variety of products and technologies.  William is currently the most senior member of the MongoDB Inc. Americas Support team.


MongoDB (from humongous) is reinventing data management and powering big data as the leading NoSQL database. Designed for how we build and run applications today, it empowers organizations to be more agile and scalable. MongoDB enables new types of applications, better customer experience, faster time to market and lower costs. It has a thriving global community with over 5 million downloads, 100,000 online education registrations, 20,000 user group members and 20,000 MongoDB Days attendees. The company has more than 600 customers, including many of the world’s largest organizations.


Factual is a location platform that enables personalized and contextually relevant mobile experiences by enriching mobile location signals with definitive global data. Factual’s real-time data stack builds and maintains data on a global scale, with Factual's core Global Places data covering over 65 million local businesses and points of interest in 50 countries. Factual’s platform also informs location with contextual demographic and commercial data, and offers cleaning and mapping services for business listings and points of interest.


Factual is in the Gateway West building, next to the Westfield Century City mall on the east side. It's the only building with big red "Westfield" signs on top.

The best place for attendees to park is at the Westfield Century City Mall.  Please note that they no longer offer free parking for the first 3 hours.  Parking rates are as follows:

•0 to 3 hours: $1.00 per hour

•3 to 5 hours: $1.00 every 15 minutes

•5 hours or more: $24.00

•Daily Maximum: $24.00


If you need a ride or can offer a ride, please post a comment underneath this meetup.


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  • Caroline R.

    If you missed William's talk or you want to watch it again, it is live here:

    1 · January 2, 2014

  • Frank

    Awesome. He knows his stuff and he knows how to present it.

    December 6, 2013

  • Sheyda A.

    Couldn't make it tonight. It would be great to get the slides.

    December 5, 2013

  • A former member
    A former member

    Thanks for a great presentation!

    December 5, 2013

  • Taimur A. Q.

    Great presentation! When can we have a link to the recording? Thanks

    December 5, 2013

  • Jeff W.

    Wish I had discovered this group earlier. I'm in MongoDB University and would love to find a mentor/tutor to bounce off of. I can pay for your time. If anyone has the knowledge and the inclination, please write me back. Otherwise, I'll see you at the meeting. New to Mongo but loving it. Jeff

    December 5, 2013

  • Sig N.

    I second Ben's comment. Hope the slides are available afterwards :)

    December 4, 2013

  • A former member
    A former member

    I can't make it since we have an OC MongoDB meetup the same day. Would love it if you're able to post the slides!

    December 4, 2013

41 went

Our Sponsors

  • MongoDB

    Thanks to MongoDB for the refreshments and support!!

  • Factual

    Factual offers event space for MongoDB User Groups

  • Diamond

    From product concept to reality using MongoDB

  • LAX Coastal Chamber of Commerce

    This is an initiative by the Chamber to marry Local Business to Tech!

  • Television Four

    TV4 is filming all our talks & pre-talk interviews with the speaker.

  • LAX CoWorking

    A coworking space w/ modern biz owner in mind. As low as $20/day.

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