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HTTP > Configuration > URL Cache
When a user attempts to access a URL, IWSVA retrieves information about this URL from a remote database—the Web Reputation database and stores the retrieved information in a local URL cache. Having the Web Reputation database on a remote server and building the local URL cache with this database information reduces the overhead on IWSVA and improves performance.
The following are the information types the URL cache can receive from Web Reputation database for a requested URL:
Web category
Pharming and phishing flags used by anti-pharming and anti-phishing detection
Web Reputation scores used to block URL access, based on a specified score sensitivity level
The WRS\URL cache keeps frequently accessed URL ratings in cache for quick retrieval. Clear the cache only if a new URL query is necessary or if the cache size is impacting performance.