Another update to the mgo MongoDB driver for Go was just
released. The project page with details is available at:

    http://labix.org/mgo

Release r2011.08.21 is fully compatible with the previous
release of mgo, and is still compatible with the current
stable release of Go.  The following changes were made:

- gobson now supports a new ",inline" tag for struct fields.
  If it's used in a struct value field, all the fields of
  the inner struct will be processed by gobson as if they
  were in the outer struct.  This enables more easily
  composing types when the stored data has common fields
  across several collections.

  In the following example, a Programmer will be
  marshalled as {"name": <str>, "cango": <bool>}:

      type Person struct
          Name string
      }

      type Programmer struct {
          Person ",inline"
          CanGo bool
      }

  More details in the documentation:

      http://goneat.org/lp/gobson/bson#Marshal

- GridFile now implements a Seek method compatible with
  os.File, allowing repositioning the file offset and
  reading from arbitrary locations.  More details at:

      http://goneat.org/lp/mgo#GridFile.Seek

- The readahead logic within GridFile now prevents a potential
  panic that might happen if the session was closed immediately
  after Read was called in a chunk boundary and the background
  readahead behavior was initiated.

--
Gustavo Niemeyer
http://niemeyer.net
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-- I never filed a patent.