How to use the redis.saveClient.get function in redis

findById: function(id, use, callback) {
        if (callback) {
          redis.get('aliases:' + id, function(data) {
            if (!data) {
              callback(null);
              return;
            }
            helpers.extend(ad = new Alias(), JSON.parse(""+data));

            if (use){
              ad.use(function(valid){
                callback(valid ? ad : null);
              })
            }else{
              if (ad.max_usage){
                redis.get('counter:'+ad.aid, function(data){
                  var cb =  (parseInt(data, 10) > 0) ? ad : null;
                  callback(cb);
                });

(function(lockset){
        redis.get(lockset, function(exp){
          gc++;
          if (exp < (new Date()).getTime()){
            garbage.unshift(lockset);
          }
          if (gc >= locks.length){
            if (garbage.length > 0){
              sys.puts("Pruning: "+garbage.join(', '));
              garbage[garbage.length] = function(data){
                sys.puts(data + ' sets removed');
                redis.close();
              };
              redis.del.apply(redis, garbage);
            }else{
              sys.puts('No rate locks to prune');
              redis.close();
            }

function getNextId(callback) {
      var len = 3, c = "";
      redis.get('admin:keylength', function(data){
        len = data || len;
        var uuidg = function uuidg() {
          len++;
          var id = UUID.uuid(len);
          redis.setnx('reservations:' + id, 'reserved', function(data) {
            if (parseInt(""+data, 10) == 0) {
              redis.set('admin:keylength', len, function(data){
                uuidg();
              });
            }
            callback(id);
          });
        }();
      });
    }
    return {

redis.setnx(lock_key, t+config.http.rate_limit, function(lr){
            if (!lr){
              redis.get(lock_key, function(exp){
                if (parseInt(exp, 10) < (t)){
                  redis.set(lock_key, t+config.http.rate_limit, function(){
                    rbl_check();
                  });
                }else{
                  err(403, {error: 'rate-limited', description: 'please wait a moment before generating the next alias'});
                }
              });
            }else{
              rbl_check();
            }
          });
        };