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Keynote Systems Inc. is taking its tried-and-true Web-performance monitoring service to the next level with Wednesday's introduction of Keynote SLA Perspective and Streaming Edition, which let Web-site operators evaluate content-delivery network services based on the performance of their static-object and streaming-media distribution offerings. The services provide Web-site owners with the data needed to see whether the content-delivery networks they've chosen are living up to their service-level agreements.
Site operators get content-delivery networks to agree on a trial run or short evaluation of their services and load either a 2-Kbyte object or three multimedia streams onto the networks and provide their URLs to Keynote. The company then uses a system of 1,300 computers in 50 cities to measure basic performance metrics and send that information to its central database, where customers can view it in near real time using a Web interface or receive daily reports from Keynote.
With static content such as site objects, Keynote measures how long it takes for them to be delivered to users. With the streams, Keynote says it measures availability, delivery time, interruptions in the streams, and the number of packets delivered and lost.
"This service helps Web-site operators pick a content-delivery network based on a missing ingredient--performance handling your content--and gives you the data needed after selection to hold providers' feet to the fire as far as meeting the SLAs you negotiated," says Daniel Briere, CEO of consulting firm TeleChoice. "That makes the service a valuable tool for choosing from a crowded field of" content-delivery networks.
Keynote SLA Perspective and SLA Perspective Streaming Edition will be generally available in April. The content-delivery network edition is priced at $495 per URL per month, while the Streaming Edition ranges from $695 to $3,995 per clip per month, depending on the measurement interval and size of the stream.
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