<?php
// Example code for monitoring exactly-once semantics
class EventProcessor {
private $processedEvents = [];
public function processEvent($eventId) {
if (!$this->isEventProcessed($eventId)) {
// Process the event
$this->processedEvents[] = $eventId;
echo "Processing event: $eventId\n";
// Additional processing logic...
// Ensure to store in a reliable store to prevent reprocessing
} else {
echo "Event $eventId has already been processed.\n";
}
}
private function isEventProcessed($eventId) {
return in_array($eventId, $this->processedEvents);
}
}
$processor = new EventProcessor();
$processor->processEvent("event_1");
$processor->processEvent("event_1"); // This will be skipped
?>
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