go-dictd is a Go library for implementing custom RFC2229/dictd protocol
servers.
Basically, the coolest part is that you can define your own custom "tables" for the dictd server. So far, this comes with a LevelDB and an Urban Dictionary example.
The protocol you have to implement is the dictd.Database interface,
which looks something like:
/* Database is an interface for external Database "Backends" to implement. */
type Database interface {
/* Method to handle incoming `MATCH` commands. */
Match(name string, query string, strat string) []*Definition
/* Method to handle incoming `DEFINE` commands. */
Define(name string, query string) []*Definition
/* Method to handle incoming `SHOW INFO` commands. */
Info(name string) string
/* Method to return a one-line Description of the Database. */
Description(name string) string
/* Get a list of valid Match Strategies. */
Strategies(name string) map[string]string
}