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NWS Internet Farm Technology Robert Bunge Internet Dissemination Officer Office of the Chief Information Officer 10/30/2008 NWS Internet Farm Technology NWS operates six web farms Originally operated independently

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nws internet farm technology
NWS Internet Farm Technology

Robert Bunge

Internet Dissemination Officer

Office of the Chief Information Officer

10/30/2008

nws internet farm technology2
NWS Internet Farm Technology
  • NWS operates six web farms
    • Originally operated independently
  • Consolidating to three farms operated as a single unit as time and resources allow
    • Silver Spring, MD
    • Kansas City, MO
    • Ft Worth, TX
nws internet farm technology3
NWS Internet Farm Technology
  • Designed to provide 99.9% availability
  • Most content mirrored between the farms
  • Globally load balanced using DNS
  • Each farm locally load balanced
    • Two caches
    • 10 web servers
    • NFS servers
    • Four database servers
    • Data processing systems
nws internet farm technology4
NWS Internet Farm Technology
  • Back stopped by commercial content delivery network providers
    • Two providers on contract
    • Experience shows each provider serves specific content best, but both work
    • Both have experienced outages
    • Increases capacity by a factor of 4 to 50, depending on content type
    • SOP is to serve from origin farms until demand approaches capacity
nws internet farm technology5
NWS Internet Farm Technology
  • Farms are LAMP environments
    • Linux/Apache/Mysql/PHP
    • Leverage commercial Mysql clustering technology
    • Home grown Content Management System
    • Use rsync to mirror content across NOAA WAN
nws internet farm technology6
NWS Internet Farm Technology
  • Some capacity numbers
    • Generation of ~200k images per hour
    • ~1 million forecast “points” updated as needed by local offices – every 1 to 12 hours
    • Most forecast words generated “on the fly” from raw data
    • Parsing/processing of 9000+ text products per hour
    • ~200 units with “websites,” 400+ content providers
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NWS Internet Farm Technology
  • Example usage
    • Avg 6 million users per day;
    • Routinely ranked in top 2,000 websites by Alexa
    • Spikes to 40-60 million users
      • 1 to 2 Gb/s
      • Driven by impact and media attention
nws internet farm technology8
NWS Internet Farm Technology
  • More focus on data services
    • XML based
      • RSS/Atom
      • Common Alerting Protocol
      • SOAP/Rest services
    • GIS services
      • KML
      • Shapefiles
      • OGC Web Feature Services
nws internet farm technology9
NWS Internet Farm Technology
  • 2nd Generation Interactive Technologies
    • NWSChat – XXMP based chat between forecasters, electronic media and emergency managers
    • Google Maps interfaces on NWS web pages
      • Relieves NWS of map making chores
      • Improved user interface/more details
    • Video briefings/training
    • SMS delivery of warnings/watches
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NWS Internet Farm Technology

Robert Bunge

NWS Internet Dissemination Officer

Office of the Chief Information Officer

Robert.bunge@noaa.gov

301-713-1381 x140