Challenges Scalability – has several million users visiting it and several million items. Large number of item churns.
{"Image DocumentName": "ChallengesScalability \u2013 has several million users visiting it and several million items. Large number of item churns.", "Image ImageDescription": "Most systems including Amazon assume amount of churn \u2013 static or minimal. For Google News \u2013 large amount of churn. Stories of interest are the ones that appeared in the last couple of hours. Strict Timing Requirements. Strict Response time requirement \u2013 less than a second. Must also take into account \u2013 time for. Generating news story clusters by accessing various indexes storing the content. Generating the HTML content as a response for HTTP request. Hence only a few milliseconds left.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}