System option for number of feeds to refresh in parallel (#6124)

* System option for number of feeds to refresh in parallel
fix https://github.com/FreshRSS/FreshRSS/issues/6123

* Forgot refreshDynamicOpml

app/Models/SystemConfiguration.php

@@ -20,6 +20,7 @@ declare(strict_types=1);
  * @property array<string,int> $limits
  * @property-read string $logo_html
  * @property-read string $meta_description
+ * @property-read int $nb_parallel_refresh
  * @property-read bool $pubsubhubbub_enabled
  * @property-read string $salt
  * @property-read bool $simplepie_syslog_enabled

app/views/helpers/javascript_vars.phtml

@@ -17,6 +17,7 @@ echo htmlspecialchars(json_encode(array(
 		'auto_mark_focus' => !!$mark['focus'],
 		'auto_load_more' => !!FreshRSS_Context::userConf()->auto_load_more,
 		'auto_actualize_feeds' => Minz_Session::paramBoolean('actualize_feeds'),
+		'nb_parallel_refresh' => max(1, FreshRSS_Context::systemConf()->nb_parallel_refresh),
 		'does_lazyload' => !!FreshRSS_Context::userConf()->lazyload ,
 		'sides_close_article' => !!FreshRSS_Context::userConf()->sides_close_article,
 		'sticky_post' => !!FreshRSS_Context::isStickyPostEnabled(),

config.default.php

@@ -92,6 +92,10 @@ return array(
 	# If true does nothing, if false restricts HTTP Referer via: meta referrer origin
 	'allow_referrer' => false,
 
+	# Number of feeds to refresh in parallel from the Web user interface.
+	# Faster with higher values. Reduce for server with little memory or database issues.
+	'nb_parallel_refresh' => 10,
+
 	'limits' => array(
 
 		# Duration in seconds of the login cookie.

p/scripts/main.js

@@ -1448,7 +1448,7 @@ function refreshFeeds(json) {
 		}));
 	} else {
 		const feeds_count = json.feeds.length;
-		for (let i = 10; i > 0; i--) {
+		for (let i = context.nb_parallel_refresh; i > 0; i--) {
 			refreshFeed(json.feeds, feeds_count);
 		}
 	}
@@ -1487,7 +1487,7 @@ function refreshDynamicOpmls(json, next) {
 	categories_processed = 0;
 	if (json.categories && json.categories.length > 0) {
 		const categories_count = json.categories.length;
-		for (let i = 10; i > 0; i--) {
+		for (let i = context.nb_parallel_refresh; i > 0; i--) {
 			refreshDynamicOpml(json.categories, categories_count, next);
 		}
 	} else {