Top Gear is an Award Winning Show on Automobiles. The show is hosted by Jeremy Clarkson, Richard Hammond, James May and The Stig (Racing Driver) is an award winning show has worldwide audience of over 350 million people in more than 90 countries.
Below is the link about the show:
http://www.bbc.co.uk/topgear/show/
The show is now available on Indian Television on BBC Entertainment. The show is being aired every Wednesday 10 PM.
Tuesday, February 8, 2011
Friday, November 20, 2009
Tuesday, November 17, 2009
Monday, July 13, 2009
Cache Busting in OAS (Real Media)
CACHE-BUSTING
1. What is cache-busting?
o Cache: Memory used temporarily to store the most frequently requested content/files/pages in order to speed its delivery to the user. Cache can be local (i.e. on a browser) or on a network. In the case of local cache, most computers have both memory (RAM), and disk (hard drive) cache. Today, web browsers cause virtually all data viewed to be cached on a user's computer.
o Cache Busting: The process by which sites or servers serve content or HTML in such a manner as to minimize or prevent browsers or proxies from serving content from their cache. This forces the user or proxy to fetch a fresh copy for each request. Among other reasons, cache busting is used to provide a more accurate count of the number of requests from users. Source: http://www.interactivejargonguide.org/Glossary/Term/Cache+Busting
2. How do we cache-bust?
We cache bust by adding the string %%REALRAND%% (a random number string) to the part of the tag where it says to insert a cache buster. %%REALRAND%% is much more effective than a time date stamp (%%GMTTIME%%) because it ensures a different random number every time the ad is delivered. There is a possibility with the time date stamp that mulitple users can a view the ad at the same time and get the same time date stamp which makes it less effective. We have seen discrepancies drop when we started to implement the random number variable instead of the time date stamp.
For example:
Before:
HREF="http://ad.doubleclick.net/jump/DellComputers.dell.yoursite/B1434;sz=468x60;ord=[time stamp]">
After:
HREF="http://adserver.realmedia.com/RealMedia/ads/click_lx.ads/%%PAGE%%/%%RAND%%/%%POS%%/%%CAMP%%/%%IMAGE%%/%%USER%%?%%REALRAND%%">
Click url for OAS:
ad.doubleclick.net/jump/DellComputers.dell.yoursite/B1434;sz=468x60;ord=__QUERY__
__QUERY__ apprends the cache buster to the end of the click string after it is run through OAS.
3. When do we cache-bust?
A cache buster is usually added to third party ad servers such as DoubleClick and Mediaplex in order to prevent their tags from caching because the OAS tags already cache bust for OAS tracking purposes. It helps to ensure that the third party ad servers' numbers will be closer to our numbers when we compare impression and click reports.
It may not be appropriate when the tag is not a third party ad server but is just an html file because they are not tracking anything. It should only be used when the client who supplied the tag is tracking impressions, clicks, or both.
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