Boulder provides a simple stream-oriented format for transmitting data objects between one or more processes. It does not provide for the serialization of Perl objects the way FreezeThaw or Data::Dumper do, but it does provide the advantage of being language independent. . In addition to a stream-oriented interface, Boulder comes with a simple record-oriented database-oriented interface, Boulder::Store, which provides query and search capabilities comparable to many flat file DBMS systems.
