Blue Coat Proxy Practice Exam

In ProxySG's object caching, cache deletion priorities are determined using a cost-based deletion approach. This method assesses the value of cached objects based on various metrics, such as how often they are accessed and their size, relative to the overall cache performance. By evaluating which items contribute most effectively to the cache's utility, the system can make informed decisions about which objects to retain and which to delete when storage space is needed.

Cost-based deletion allows for more intelligent management of cached content, as it can prioritize keeping frequently accessed or high-value objects while freeing up space occupied by less useful items. This strategy helps optimize the performance of the proxy by ensuring that the cache remains populated with the most valuable items, improving overall response times and reducing unnecessary load on backend resources.