How Often Do S3 Lifecycle Rules Run

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When it comes to managing data on Amazon S3, one key feature that helps optimize storage costs is the S3 Lifecycle Management. This feature allows you to define rules that automatically transition your objects between different storage classes based on their age. But have you ever wondered how often these lifecycle rules run? Let’s dive deep into this topic and explore the frequency of the S3 lifecycle rule executions.

Before we get into the details, let me introduce myself. I’m a tech enthusiast and have been working with AWS services, including S3, for quite some time. I’ve had my fair share of experiences with the S3 lifecycle rules and can offer some insights and personal commentary on this matter.

The frequency at which S3 lifecycle rules run is primarily determined by the age of the objects in your bucket and the rule’s configuration. When you define a lifecycle rule, you specify a transition action, such as moving objects to the Glacier storage class after a certain number of days. Along with the action, you also set a transition time period, which could be a specific number of days or an exact date.

Now, let’s talk about how often the S3 lifecycle rules evaluate your objects for transition. In general, S3 lifecycle rules run once a day. The evaluation process takes place at the bucket level, meaning that all objects within the bucket are checked against the defined rules. However, it’s important to note that the actual execution of the transition action may take some time, depending on the number of objects to be processed and the workload on the S3 service.

While the default frequency is once a day, there are some scenarios where the lifecycle rules might not run exactly as expected. For example, if you’ve just set up a new lifecycle rule or made modifications to an existing rule, it might take some time for the changes to propagate throughout the system. In such cases, it’s advisable to wait for a reasonable amount of time before expecting the rules to take effect.

Additionally, there might be situations where you need to trigger the lifecycle rule evaluation manually. This can be done by initiating a custom S3 Inventory report for your bucket. The S3 Inventory report provides a comprehensive list of all objects in your bucket and their corresponding metadata, including the storage class. By generating this report, you can ensure that the lifecycle rules are applied to your objects promptly.

To sum up, the S3 lifecycle rules run once a day to evaluate objects in your bucket for transition based on the defined rules. While the default frequency is reliable, it’s essential to be aware of the potential delays in the execution of transition actions and give the system some time to process the changes. In case of urgency, manually triggering the lifecycle rule evaluation through the S3 Inventory report can help ensure timely transitions.


Managing storage costs is a crucial aspect of any data storage solution, and S3 lifecycle management provides a powerful tool for automating this process. Understanding how often the S3 lifecycle rules run is key to effectively leveraging this feature. By setting up thoughtful rules and giving the system enough time to process the changes, you can optimize your storage costs and ensure efficient data management on Amazon S3.