+ // 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);
+ }
+