Godis

Godis is a simple, probably naive, in-memory key-value database written in Go, for learning purposes. It is inspired by Redis, but it is not a Redis clone.

Protocol

Godis uses a websocket protocol to communicate between a client and the server. It exchanges JSON messages for commands and replies.

For example, sending a command to the server to set the key "example" to the string "hello, world" will respond with the reply of type ACK (for acknowledge) with the value "OK".

{ "o": "SET", [ "example" "hello, world" ] }
{ "t": "ACK", "v": "OK" }

Commands

Godis supports the following commands:

Syntax	Description
SET	Sets a key to hold a string value
GET	Returns the string value of a key
MGET	Returns the string values of one or more key
DEL	Deletes one or more keys
EXISTS	Determines if one or more keys exists
INCR	Increments the integer value of a key by one
DECR	Decrements the integer value of a key by one
KEYS	Returns all key names that matches a glob pattern
DBSIZE	Returns the number of keys in the database
FLUSHDB	Removes all the keys in the database