diff --git a/README.txt b/README.txt
index 752d518..aa83565 100644
--- a/README.txt
+++ b/README.txt
@@ -338,3 +338,198 @@ the same options.
     echo httprl_pr($request);
     ?>
 
+
+Get 2 results from 2 different queries at the hook_boot bootstrap level in D6.
+
+    <?php
+    // Run 2 queries and get the result.
+    $x = db_result(db_query_range("SELECT filename FROM {system} ORDER BY filename ASC", 0, 1));
+    $y = db_result(db_query_range("SELECT filename FROM {system} ORDER BY filename DESC", 0, 1));
+    echo $x . "<br \>\n" . $y . "<br \>\n";
+    unset($x, $y);
+
+
+    // Run above 2 queries and get the result via a background callback.
+    $args = array(
+      // First query.
+      array(
+        'type' => 'function',
+        'call' => 'db_query_range',
+        'args' => array('SELECT filename FROM {system} ORDER BY filename ASC', 0, 1),
+      ),
+      array(
+        'type' => 'function',
+        'call' => 'db_result',
+        'args' => array('last' => NULL),
+        'return' => &$x,
+      ),
+
+      // Second Query.
+      array(
+        'type' => 'function',
+        'call' => 'db_query',
+        'args' => array('SELECT filename FROM {system} ORDER BY filename DESC', 0, 1),
+      ),
+      array(
+        'type' => 'function',
+        'call' => 'db_result',
+        'args' => array('last' => NULL),
+        'return' => &$y,
+      ),
+    );
+    $callback_options = array(array('return' => ''), &$args);
+    // Queue up the request.
+    httprl_queue_background_callback($callback_options);
+    // Execute request.
+    httprl_send_request();
+
+    // Echo what was returned.
+    echo httprl_pr($x, $y);
+    ?>
+
+
+Get 2 results from 2 different queries at the hook_boot bootstrap level in D7.
+
+    <?php
+    $x = db_select('system', 's')
+      ->fields('s', array('filename'))
+      ->orderBy('filename', 'ASC')
+      ->range(0, 1)
+      ->execute()
+      ->fetchField();
+    $y = db_select('system', 's')
+      ->fields('s', array('filename'))
+      ->orderBy('filename', 'DESC')
+      ->range(0, 1)
+      ->execute()
+      ->fetchField();
+    echo $x . "<br \>\n" . $y . "<br \>\n";
+    unset($x, $y);
+
+    // Run above 2 queries and get the result via a background callback.
+    $args = array(
+      // First query.
+      array(
+        'type' => 'function',
+        'call' => 'db_select',
+        'args' => array('system', 's',),
+      ),
+      array(
+        'type' => 'method',
+        'call' => 'fields',
+        'args' => array('s', array('filename')),
+      ),
+      array(
+        'type' => 'method',
+        'call' => 'orderBy',
+        'args' => array('filename', 'ASC'),
+      ),
+      array(
+        'type' => 'method',
+        'call' => 'range',
+        'args' => array(0, 1),
+      ),
+      array(
+        'type' => 'method',
+        'call' => 'execute',
+        'args' => array(),
+      ),
+      array(
+        'type' => 'method',
+        'call' => 'fetchField',
+        'args' => array(),
+        'return' => &$x,
+      ),
+
+      // Second Query.
+      array(
+        'type' => 'function',
+        'call' => 'db_select',
+        'args' => array('system', 's',),
+      ),
+      array(
+        'type' => 'method',
+        'call' => 'fields',
+        'args' => array('s', array('filename')),
+      ),
+      array(
+        'type' => 'method',
+        'call' => 'orderBy',
+        'args' => array('filename', 'DESC'),
+      ),
+      array(
+        'type' => 'method',
+        'call' => 'range',
+        'args' => array(0, 1),
+      ),
+      array(
+        'type' => 'method',
+        'call' => 'execute',
+        'args' => array(),
+      ),
+      array(
+        'type' => 'method',
+        'call' => 'fetchField',
+        'args' => array(),
+        'return' => &$y,
+      ),
+    );
+    $callback_options = array(array('return' => ''), &$args);
+    // Queue up the request.
+    httprl_queue_background_callback($callback_options);
+    // Execute request.
+    httprl_send_request();
+
+    // Echo what was returned.
+    echo httprl_pr($x, $y);
+    ?>
+
+
+Run a cache clear at the DRUPAL_BOOTSTRAP_FULL level as the current user in a
+non blocking background request.
+
+    <?php
+    // Normal way to do this.
+    drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
+    module_load_include('inc', 'system', 'system.admin');
+    system_clear_cache_submit();
+
+
+    // How to do it in a non blocking background request.
+    $args = array(
+      array(
+        'type' => 'function',
+        'call' => 'drupal_bootstrap',
+        'args' => array(DRUPAL_BOOTSTRAP_FULL),
+      ),
+      array(
+        'type' => 'function',
+        'call' => 'module_load_include',
+        'args' => array('inc', 'system', 'system.admin'),
+      ),
+      array(
+        'type' => 'function',
+        'call' => 'system_clear_cache_submit',
+        'args' => array('', ''),
+      ),
+      array(
+        'type' => 'function',
+        'call' => 'watchdog',
+        'args' => array('httprl-test', 'background cache clear done', array(), WATCHDOG_DEBUG),
+      ),
+    );
+
+    // Pass the current session to the sub request.
+    if (!empty($_COOKIE[session_name()])) {
+      $options = array('headers' => array('Cookie' => session_name() . '=' . $_COOKIE[session_name()] . ';'));
+    }
+    else {
+      $options = array();
+    }
+    $callback_options = array(array('options' => $options), &$args);
+
+    // Queue up the request.
+    httprl_queue_background_callback($callback_options);
+    // Execute request.
+    httprl_send_request();
+    ?>