#29🔌 IntegrationPainful

Publishing Platform Events Without Error Handling

“Platform Events can fail to publish. If you don't check, you'll never know.”

What Happened

I set up Platform Events to decouple a complex Opportunity process at Mobilization Funding. Fire-and-forget, right? Wrong. During a high-volume import, some events hit the publish limit. The trigger kept running but events silently dropped. Half the downstream automations never fired. The ops team spent a full day reconciling records manually.

The Wrong Way

trigger OpportunityEvents on Opportunity (after insert) {
  List<Opp_Created__e> events = new List<Opp_Created__e>();
  for (Opportunity opp : Trigger.new) {
    events.add(new Opp_Created__e(
      Opp_Id__c = opp.Id,
      Amount__c = opp.Amount
    ));
  }
  EventBus.publish(events); // fire and forget - hope it works!
}

The Right Way

trigger OpportunityEvents on Opportunity (after insert) {
  List<Opp_Created__e> events = new List<Opp_Created__e>();
  for (Opportunity opp : Trigger.new) {
    events.add(new Opp_Created__e(
      Opp_Id__c = opp.Id,
      Amount__c = opp.Amount
    ));
  }
  List<Database.SaveResult> results = EventBus.publish(events);
  List<Error_Log__c> errors = new List<Error_Log__c>();
  for (Integer i = 0; i < results.size(); i++) {
    if (!results[i].isSuccess()) {
      for (Database.Error err : results[i].getErrors()) {
        errors.add(new Error_Log__c(
          Source__c = 'OpportunityEvents Trigger',
          Message__c = err.getMessage(),
          Record_Id__c = Trigger.new[i].Id
        ));
      }
    }
  }
  if (!errors.isEmpty()) { insert errors; }
}

The Lesson

EventBus.publish returns SaveResults. Check them. Log failures. Platform Events are reliable but not infallible.

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#28 No Retry Logic on External API Calls Using the Same Connected App Across All Environments #30

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