In Section 4: "The Page Cache" of "SQLite File IO Specification" ( https://www.sqlite.org/fileio.html#tocentry_132 ), the following appears:

"Because reading from the database file is assumed to be an order of magnitude faster than reading from main-memory, caching database page content in the page cache to minimize the number of read operations performed on the database file is a significant performance enhancement."

Presumably this should be:

"Because reading from the database file is assumed to be an order of magnitude *slower* than reading from main-memory, ..."

(replace the word "faster" with the word "slower").

Fixed upstream in core library documentation.