go-cdb is a pure Go package to read and write cdb (“constant database”) files.
The cdb file format is a machine-independent format with the following 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, plus 24 bytes per record, plus the space for keys and data.
- No random limits: cdb can handle any database up to 4 gigabytes. There are no other restrictions; records don’t even have to fit into memory.
See the original cdb specification and C implementation by D. J. Bernstein
Assuming you have a working Go environment, installation is simply:
go get github.com/jbarham/go-cdb
The package documentation can be viewed online at
or on the command line by running
go doc github.com/jbarham/go-cdb.
The included self-test program
cdb_test.go illustrates usage of the package.
The go-cdb package includes ports of the programs
the original implementation.