---
title: "How Do You Handle Duplicate and Out-of-Order Cloud Storage Events?"  
description: "How Do You Handle Duplicate and Out-of-Order Cloud Storage Events?"  
author: "Zeynep Kiliç"  
published: 2026-10-14  
updated: 2026-10-14  
canonical: https://www.mindstick.com/forum/162284/how-do-you-handle-duplicate-and-out-of-order-cloud-storage-events  
category: "Cloud Storage"  
tags: ["Cloud Storage", "aws", "Azure", "google cloud", "Event Processing"]  
reading_time: 1 minute  

---

# How Do You Handle Duplicate and Out-of-Order Cloud Storage Events?

I’m building a file-processing service that may receive uploads from Amazon S3, Azure Blob Storage, and Google Cloud Storage. The event mechanisms differ, but I’m trying to keep one processing pipeline across all three.

How do you design around **duplicate object notifications** or **out-of-order storage events**? I’m especially interested in what you use as a stable event identity, and whether you rely on object versioning, a processing ledger, or another approach to prevent the same file from being handled twice.


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Original Source: https://www.mindstick.com/forum/162284/how-do-you-handle-duplicate-and-out-of-order-cloud-storage-events

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