BerkeleyDB

• The Berkeley DB library has many other fascinating features

  • Not all are available through DB_File

• For example, there is a DB_Queue file type

  • This is like an array

  • But it is optimized for push and shift operations

  • You might use this to store a log file

  • When the log file exceeds a certain size, you shift the old records off the front

• There is an option to keep the values for duplicate keys in a user-defined order

• It supports transactions

• The BerkeleyDB module provides interfaces to this functionality

• It's worth skimming through the manual

• Check out http://www.sleepycat.com/docs/reftoc.html for a tutorial and overview

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Copyright © 2003 M. J. Dominus