redis-sessions

Redis Universal Sessions

There is a need to maintain a universal session across different application server platforms.

It should be simple and straightforward to query a session and set session variables.

Features:

• Every session belongs to an app (e.g. webapp, app_cust123)

  • TODO: Get an array of all sessions of an app, complete with lastactivity, ip which were active within the last n seconds.
  • Get the amount of active sessions of an app within the last n seconds.
  • Kill all sessions of an app.

• Every session must have an unique id, which is usually the userid of the logged in user.

  • TODO: Get all sessions of a single id.
  • Kill all sessions that belong to a single id. E.g. log out user123 on all devices.

• Basic stuff

  • Create a session by supplying an id and a timeout in seconds. Will return the session token:
    e.g. d131dd02c5e6eec4d131c69821bcb6a88393dd02c5e6eec4d131dd02c5e6eec4

  • Kill a session by supplying the session token.

  • Query a session by supplying the session token.
    The idle time is the duration in seconds since when this session was used before this request. Will return the complete object:

    {  
    	"id":"user123",
    	"r": 123,  // The number of reads on this token
    	"w": 4,  // The number of writes on this token
    "idle": 21,  // The idle time in seconds.
    	"d":
    		{
    			"unread_msgs": "12",
    			"last_action": "/read/news",
    			"birthday": "2013-08-13"
    		}
    }
    

  • Set/Update/Delete parameters by supplying a token and some data.
    The data object contains a simple key/value list where values are always strings.
    To remove keys set them to null, keys that are not supplied will not be touched:

    {
    	"token": "d131dd02c5e6eec4d131c69821bcb6a88393dd02c5e6eec4d131dd02c5e6eec4",
    	"d":
    		{
    			"unread_msgs": null,
    			"last_action": "/read/msg/2121"
    		}
    }
    

  • After the above operation
    the resulting object will look like this:

    { "id":"user123", "r": 124, "w": 5, "idle": 1, "data": { "last_action": "/read/msg/2121", "birthday": "2013-08-13" } }