
202 The State of the Art in Intrusion Prevention and Detection
this regard is not signicant. However, MongoDB tends to perform slightly worse when the number
of returned results is small but better on larger return sets.
While the more keywords used increases the search time for encrypted searches, it is mitigated
by the fact that it also considerably decreases the number of documents returned. It is worth not-
ing that for unencrypted searches adding additional keywords adds relatively no overtime time
(Figure8.5).
A prohibitive part of extremely large search returns is the bandwidth considerations of transfer-
ring the results to the client