I use node.js on my server and I use redis key-store for storing data about my characters. Every connection has it own character. I want to get all data about characters(Person, has its name, age, profession, ...) into Characters array, so I can then selectively send it to connected clients.

var Characters = [];

for (var ID in Connections) {

    redis_client.HGETALL(ID, function(err, result) {

        if (result) {

            Characters.push(result);

        }

    });

}

console.log(Characters);

I have read, that this is due to asynchronous vs synchronous problem, so I made global variable character.

//global variables

var character;

//function code

var Characters = [];

for (var ID in Connections) {

    redis_client.HGETALL(ID, function(err, result) {

        character = result;

    });

    if(character) {

         console.log(character); // returns correct result

         // make copy of character

        Characters.push(JSON.parse(JSON.stringify(character)));

        character = undefined;

    }

}

console.log(Characters); // array of 1 character * number of connection

                                                    //BUT I expect different character for each connection