// Copyright 2017 Gerasimos Maropoulos, ΓΜ. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package sessions

// Database is the interface which all session databases should implement
// By design it doesn't support any type of cookie session like other frameworks,
// I want to protect you, believe me, no context access (although we could)
// The scope of the database is to session somewhere the sessions in order to
//  keep them after restarting the server, nothing more.
// the values are sessiond by the underline session, the check for new sessions, or
// 'this session value should added' are made automatically by q, you are able just to set the values to your backend database with Load function.
// session database doesn't have any write or read access to the session, the loading of
// the initial data is done by the Load(string) map[string]interfface{} function
// synchronization are made automatically, you can register more than one session database
// but the first non-empty Load return data will be used as the session values.
type Database interface {
	Load(string) map[string]interface{}
	Update(string, map[string]interface{})
}