X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FModel%2FAPContact.php;h=6a8e5b3ae1c78e39433c1d25543fab4a02718616;hb=deb6b7a7c3d62a42e2f71a3adf7ba3689e741f5a;hp=d31aa5d3727f4eecebdbb6d7e9f0841b37d310b8;hpb=a852455d0ed9824fb71c9374c9fffda28f95096f;p=friendica.git

diff --git a/src/Model/APContact.php b/src/Model/APContact.php
index d31aa5d372..6a8e5b3ae1 100644
--- a/src/Model/APContact.php
+++ b/src/Model/APContact.php
@@ -22,8 +22,11 @@
 namespace Friendica\Model;
 
 use Friendica\Content\Text\HTML;
+use Friendica\Core\Cache\Duration;
 use Friendica\Core\Logger;
+use Friendica\Core\System;
 use Friendica\Database\DBA;
+use Friendica\DI;
 use Friendica\Network\Probe;
 use Friendica\Protocol\ActivityNamespace;
 use Friendica\Protocol\ActivityPub;
@@ -40,7 +43,7 @@ class APContact
 	 * @param string $addr Address
 	 * @return array webfinger data
 	 */
-	public static function fetchWebfingerData(string $addr)
+	private static function fetchWebfingerData(string $addr)
 	{
 		$addr_parts = explode('@', $addr);
 		if (count($addr_parts) != 2) {
@@ -154,6 +157,16 @@ class APContact
 			return $fetched_contact;
 		}
 
+		// Detect multiple fast repeating request to the same address
+		// See https://github.com/friendica/friendica/issues/9303
+		$cachekey = 'apcontact:getByURL:' . $url;
+		$result = DI::cache()->get($cachekey);
+		if (!is_null($result)) {
+			Logger::notice('Multiple requests for the address', ['url' => $url, 'update' => $update, 'callstack' => System::callstack(20), 'result' => $result]);
+		} else {
+			DI::cache()->set($cachekey, System::callstack(20), Duration::FIVE_MINUTES);
+		}
+
 		$apcontact['url'] = $compacted['@id'];
 		$apcontact['uuid'] = JsonLD::fetchElement($compacted, 'diaspora:guid', '@value');
 		$apcontact['type'] = str_replace('as:', '', JsonLD::fetchElement($compacted, '@type'));