![]() Campaign Manager 360 therefore doesn't record additional impressions, which causes discrepancies. The browser draws any additional calls for the asset from the cache, rather than from the Campaign Manager 360 ad servers. Once a browser or proxy server receives a creative asset from Campaign Manager 360, it stores it in the browser cache. What happens if I don't use RNGs or other cache busters to defeat caching? ![]() Please verify the timestamp for your ad serving solution with your contact at the respective company, as these variables vary according to the third-party ad server version. If your publisher doesn't use Ad Manager as its adserving solution, you should still add a cache buster, such as a timestamp variable or a random number generated by an RNG that the system recognizes.įor DART Enterprise, RealMedia, or Adforce, the publisher can replace the component of the tags with these variables: Ad serving solution Add cache busters to tagsįor publishers that use Google Ad Manager, add a random number generator (RNG).įor publishers that use other ad serving solutions, use a timestamp variable or other variable that the system can recognize. This number is a value for the ord= attribute. Generally, tags use random number generation (RNG) to dynamically add a random number to your tag each time it fires. The browser can't tell that it has already cached content associated with your tag because the tag has a different random number each time it fires. Because the tag has a different number each time, the browser sends a new request each time. About Chinese Translation Dutch Translation French Translation German Translation Italian Translation Persian Translation Portuguese Translation Russian. Cache busting adds a random string to your ad tag each time the tag fires - typically a random number. Without a request, Campaign Manager 360 cannot log an impression.Ĭache busting is a way to prevent browsers from caching your ad content. If a browser caches ad content for a particular ad, it will not need to request the ad content when your ad tag fires. The trouble is, Campaign Manager 360 records impressions on your ads based on content requests. Once content is cached, the browser no longer has to request it from servers. When your browsers cache content, they store it on the user's computer (or a proxy server) for later use. Webpages have code that instructs browsers to "call" servers to request this content, including images and videos. Browsers get site content and ad content from servers.
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