Past Meetup

Overcoming RoR Performance Challenges - Panel discussion + iPad2 Raffle!

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175 people went

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Understanding RoR Performance Challenges - Panel Discussion - iPad 2 Raffle!

Food and beverages will be served.

Thank you to MuDynamics for sponsoring this meetup as well as providing an amazing raffle!

Join us for a panel discussion on overcoming RoR Performance Challenges.

Moderator: Kowsik Guruswamy - Co-founder and CTO of Mu Dynamics

Kowsik Guruswamy co-founded Mu Dynamics and continues to drive its innovative spirit as the CTO. Kowsik is also the architect of Blitz, Mu Dynamics’ Application Performance Management System(APM) which can dramatically improve Ruby performance. Kowsik is also a regular contributor to Twitter with updates on cutting edge developments on cloud services, mobile apps and APIs. You can follow Kowsik on Twitter - @k0ws1k ( and see how well Blitz improves Ruby performance.

Prior to founding Mu Dynamics, he was a Distinguished Engineer at Juniper Networks and the Chief Architect for their Intrusion Prevention product line. Kowsik joined Juniper Networks through acquisitions – he designed and architected the industry’s first inline Intrusion Prevention device for OneSecure, which was acquired by NetScreen and, in turn, acquired by Juniper. He holds 8 patents in various networking and security technologies and has an MS in computer science from the University of Louisiana.


Wolfram Arnold, Ph.D. is a seasoned software professional close to two decades of experience and has been working on consumer web applications in Ruby-on-Rails since 2006. More recently he has been interested in mobile apps, specifically on Android and with cross-platform toolkits.

Wolfram currently holds the title of VP of Engineering at Papercheck LLC ( in San Francisco. He is a frequent speaker at community meetups and conferences and regularly teaches training workshops and tutorials on Rails and Test-Driven Development.

Previous client engagements have included G5 (, (, (, ( (

Sam Parnell - VP of Engineering for Bleacher Report

Sam Parnell is the VP of Engineering for Bleacher Report ( (, the 4th largest sports site in the US. He manages all engineering and operations for a site reaching 25+ million sports fans every month. He is responsible for building a highly engaging experience across web, tablet and mobile that generates 700+ million pageviews per month.

In previous roles as a web technology consultant for agencies such as Razorfish and Blast Radius, Sam’s clients included Nike, Electronic Arts, The LATimes, Genetech, KightRidder Newspapers, Fujitsu and General Motors.

Aryk Grosz - CTO Mixbook

Aryk Grosz is the co-Founder, CTO, and President of Mixbook, a profitable, rapidly-growing startup that is changing the way people create content on the web and output them into innovative photo products for print. Being one of the first production websites using Ruby on Rails, Mixbook has continued its focus on maintaining high code quality and architectural standards by keeping the codebase up-to-date with recent Rails 3 releases and incorporating XP principles like "refactoring as you go". While at Mixbook, Aryk has accumulated extensive knowledge of the Rails framework, contributed and co-authored open source frameworks like RubyAMF, and introduced patents around color and image analysis, layout and grouping algorithms, and innovative user interfaces.
Before Mixbook, Aryk developed supply chain simulations for the Joint Genome Institute at the U.S. Department of Energy. Arykhas a BSE in Industrial Engineering and Operations Research from the University of California, Berkeley. While there, he also received a certificate from the Center for Entrepreneurship and Technology for completing coursework in Management and Innovation.

Schedule: 6:00-6:45pm - Networking, food, beverages

6:45-7:00pm - Announcements

7:00-8:00pm - Understanding RoR Performance Challenges

8:00-8:15pm - Raffle - iPad 2

8:15-9:00pm - Networking

About Blitz from MuDynamics

Blitz, from Mu Dynamics, is a cloud-based Application Performance Management (APM) service that enables developers building mobile applications, cloud services, websites or APIs to manage the performance of their application throughout the DevOps lifecycle. Whether on its own or through integration with the Web's most popular development platforms, developers use Blitz to build, deploy and monitor all kinds of applications, from mobile games to mission-critical enterprise applications. Blitz is powerful, easy-to-use and cost effective. For more information on Blitz, click here (