Kousuke Kannagi
824a384b86
Take maintainership. Update MASTER_SITES, WWW and pkg-descr. Add LICENSE and DOCS option. Changelog: https://cdb.cr.yp.to/download.html#changelog PR: 290686 Approved by: fluffy (mentor)
21 lines
1.1 KiB
Plaintext
21 lines
1.1 KiB
Plaintext
cdb is a fast, reliable, lightweight package for creating and reading
|
|
constant databases. Its database structure provides several features:
|
|
|
|
* Fast lookups: A successful lookup in a large database normally
|
|
takes just two disk accesses. An unsuccessful lookup takes only one.
|
|
* Low overhead: A database uses 2048 bytes (or 4096 bytes for cdb64),
|
|
plus 24 bytes per record (or 48 bytes per record for cdb64), plus
|
|
the space for keys and data.
|
|
* No random limits: cdb can handle any database up to 4 gigabytes
|
|
(or up to an exabyte for cdb64). There are no other restrictions.
|
|
Records are streamed and don't have to fit into memory.
|
|
Databases are stored in a machine-independent format (one format for
|
|
cdb, one format for cdb64).
|
|
* Fast atomic database replacement: `cdbmake` rewrites an entire
|
|
database much more quickly than other hashing packages. Database
|
|
replacement is safe against system crashes. Readers don't pause
|
|
during a rewrite: they continue transparently using the old database
|
|
until the new database is in place.
|
|
* Fast database dumps: `cdbdump` prints the contents of a database in
|
|
cdbmake-compatible format.
|