NWS Internet Farm Technology - PowerPoint PPT Presentation

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NWS Internet Farm Technology

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  1. NWS Internet Farm Technology Robert Bunge Internet Dissemination Officer Office of the Chief Information Officer 10/30/2008

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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

  10. NWS Internet Farm Technology Robert Bunge NWS Internet Dissemination Officer Office of the Chief Information Officer Robert.bunge@noaa.gov 301-713-1381 x140