coders

4:29 am on August 2, 2013 · coders (2), etsy (2), tech (2), tech talk (1)

VIDEO: NYC Tech Talks – Designing for Garbage Collection #jvm #garbagecollection

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As server systems expand in complexity, garbage collection – automated memory recovery processing – needs to be constructed elegantly and to operate invisibly. Understanding the impact of garbage collection, both at a single node and a cluster level, is key to developing high-performance, high-availability applications when using a garbage collected language. In this talk – Designing for Garbage Collection – Gregg Donovan of Etsy explores the basics of common garbage collection algorithms, how to monitor your runtime, and how to measure success when tuning GC. At a cluster-level, he reviews how to design for partial availability — how to avoid sending requests to a GCing node and how to be resilient to mid-request GC pauses. He reviews the code Etsy uses to implement its custom ‘Banner’ protocol used to detect GCing JVM nodes at request-time. For application development, he reviews common memory leak scenarios and how to detect them.

Video is below.

  • View on YouTube: http://youtu.be/Daa65NtBwEA
  • Transcribe on AMARA: http://www.amara.org/en/videos/OrFrKJL4WzvN/
3:58 am on August 2, 2013 · c4q (3), coders (2), education (21), nyc (131), queenstech (3)

VIDEO: Access Code: Demo Day @Coalition4QNS

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On July 29 2013 the Coalition for Queens presented Access Code: Demo Day at the See Me exhibition space in Long Island City, NYC. Access Code is an 8-week, 50-hour tech education and entrepreneurship development program that provides immigrant entrepreneurs with the skills & mentorship to build and launch high-tech companies. In the first program, over the past eight weeks, twenty-two students worked hard learning the ins-and-outs of iOS development, and then split into four teams each tasked with producing a working app. The program received support from the City, and no less than two Congresspersons, and two Councilmembers, including the Chair of the Economic Development Committee Karen Koslowitz, showed up to say a few words. A keynote – a lengthy homily on perseverance – was delivered by entrepreneur Nihal Mehta. Video is below, the actual demos start 45 mins in.

  • Watch on Vimeo: https://vimeo.com/71458334