Option to prevent caching new questions

qa-include/app/format.php

@@ -732,7 +732,7 @@
 	 * Generate array of split HTML (prefix, data, suffix) to represent a timestamp, optionally with the full date.
 	 *
 	 * @param int $timestamp  Unix timestamp.
-	 * @param bool $fulldatedays  Number of days after which to show the full date.
+	 * @param int $fulldatedays  Number of days after which to show the full date.
 	 * @return array  The HTML.
 	 */
 	function qa_when_to_html($timestamp, $fulldatedays)

qa-include/app/options.php

@@ -215,7 +215,8 @@
 			'avatar_users_size' => 30,
 			'caching_catwidget_time' => 30,
 			'caching_enabled' => 0,
-			'caching_q_time' => 5,
+			'caching_q_start' => 7,
+			'caching_q_time' => 30,
 			'caching_qlist_time' => 5,
 			'captcha_on_anon_post' => 1,
 			'captcha_on_feedback' => 1,

qa-include/lang/qa-lang-options.php

@@ -47,6 +47,7 @@
 		'block_ips_write' => 'Blocked IP addresses - separate by spaces or commas:',
 		'caching_catwidget_time' => 'Cache category widget for:',
 		'caching_enabled' => 'Enable caching:',
+		'caching_q_start' => 'Start caching questions after:',
 		'caching_q_time' => 'Cache question pages for:',
 		'caching_qlist_time' => 'Cache question lists for:',
 		'captcha_module' => 'Use captcha module:',

qa-include/pages/admin/admin-default.php

@@ -74,6 +74,7 @@
 		'avatar_store_size' => 'number',
 		'avatar_users_size' => 'number',
 		'caching_catwidget_time' => 'number',
+		'caching_q_start' => 'number',
 		'caching_q_time' => 'number',
 		'caching_qlist_time' => 'number',
 		'columns_tags' => 'number',
@@ -646,13 +647,7 @@
 			$subtitle = 'admin/caching_title';
 			$formstyle = 'wide';
 
-			$showoptions = array('caching_enabled', 'caching_q_time', 'caching_qlist_time', 'caching_catwidget_time');
-
-			$checkboxtodisplay = array(
-				'caching_q_time' => 'option_caching_enabled',
-				'caching_qlist_time' => 'option_caching_enabled',
-				'caching_catwidget_time' => 'option_caching_enabled',
-			);
+			$showoptions = array('caching_enabled', 'caching_q_start', 'caching_q_time', 'caching_qlist_time', 'caching_catwidget_time');
 
 			break;
 
@@ -1555,7 +1550,10 @@
 				case 'caching_qlist_time':
 				case 'caching_catwidget_time':
 					$optionfield['note'] = qa_lang_html_sub('main/x_minutes', '');
-				break;
+					break;
+				case 'caching_q_start':
+					$optionfield['note'] = qa_lang_html_sub('main/x_days', '');
+					break;
 			}
 
 			if (isset($feedrequest) && $value)
@@ -1786,7 +1784,6 @@
 		case 'caching':
 			$cacheManager = Q2A_Storage_CacheManager::getInstance();
 			$qa_content['error'] = $cacheManager->getError();
-
 			break;
 	}
 

qa-include/pages/question.php

@@ -153,10 +153,13 @@
 	}
 
 
-//	Save question data to cache
+//	Save question data to cache (if older than configured limit)
 
 	if ($saveCache) {
-		$cacheHandler->set($cacheKey, $questionData, qa_opt('caching_q_time'));
+		$questionAge = qa_opt('db_time') - $question['created'];
+		if ($questionAge > 86400 * qa_opt('caching_q_start')) {
+			$cacheHandler->set($cacheKey, $questionData, qa_opt('caching_q_time'));
+		}
 	}