A content serving data processing system is configured for trending topic cache eviction management. The system includes a computing system communicatively coupled to different sources of content objects over a computer communications network. The system also includes a cache storing different cached content objects retrieved from the different content sources. The system yet further includes a cache eviction module. The module includes program code enabled to manage cache eviction of the content objects in the cache by marking selected ones of the content objects as invalid in accordance with a specified cache eviction strategy, detect a trending topic amongst the retrieved content objects, and override the marking of one of the selected ones of the content objects as invalid and keeping the one of the selected ones of the content objects in the cache when the one of the selected ones of the content objects relates to the trending topic.
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