session() in lumen

// Save Session
$router->get('/', function (\Illuminate\Http\Request $request) {

    $request->session()->put('name', 'Lumen-Session');

    return response()->json([
        'session.name' => $request->session()->get('name')
    ]);
});


// Test session
$router->get('/session', function (\Illuminate\Http\Request $request) {

    return response()->json([
        'session.name' => $request->session()->get('name'),
    ]);
});