Search Sequence in the ICM Server Cache 

• The application first checks the UFO List (provided that this is active, see parameter icm/HTTP/server_cache_<xx>/ufo_list), to establish whether this request has already been rejected by the system, and whether it should be rejected on this occasion.
• The application then looks in the Main Memory of the ICM server cache (Memory Cache), and icm/HTTP/server_cache_<xx>/memory_size_MB establishes the size of the part of the ISC in main memory.
• The application then looks for the object in the File on the hard disk that the ISC is using (Disk Cache). The parameter icm/HTTP/server_cache_<xx>/size_MB establishes the total size of the ISC (a part of which is instantly accessible as it is stored in main memory).

Identifying Objects