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Computing Miscellaneous in Computing . 3 weeks ago
cdb, short for "constant database", refers to both a library and data format created by Daniel J. Bernstein. cdb acts as an on-disk associative array, mapping keys to values, and allows multiple values to be stored for a single key. A constant database allows only two operations: creation and reading. Both operations are designed to be very fast and highly reliable. Since the database does not change while it is in use, multiple processes can access a single database without locking. Additionally, since all modifications create a replacement database, it can take advantage of UNIX filesystem semantics to provide a guarantee of reliability.
Record positions, key and value lengths, and hash values are 32-bit quantities and therefore must fit into 4 gigabytes. cdb is used by djbdns, fastforward, mess822, qmail and ucspi-tcp to provide highly efficient, reliable, and simple data access.
Posted on 22 Oct 2024, this text provides information on Computing related to Miscellaneous in Computing. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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