Yes, you can automatically delete files from S3 after a specified time using S3 Lifecycle Policies with an 'Expiration' action.
S3 Lifecycle Policies are a set of rules you define for your bucket to automatically manage your objects . The specific rule for deleting files is called an Expiration action, which tells Amazon S3 to permanently remove objects that meet the rule's criteria . These rules can be applied to all objects in a bucket or filtered by prefix (e.g., a folder path), object tags, or object size .
There are two main ways to set up a lifecycle policy: using the AWS Management Console or the AWS Command Line Interface (AWS CLI).
Open the Amazon S3 console and navigate to your bucket.
Click on the Management tab, then select Create lifecycle rule .
Give your rule a name. Then, choose the scope: apply it to the entire bucket or limit it to objects with a specific prefix (like 'logs/') or tags .
Under Lifecycle rule actions, select Expire current versions of objects (or a similar expiration option).
Specify the number of days after object creation when the objects should expire and be deleted .
Review your settings and click Create rule.
Delayed Execution: After a rule is met, there can be a delay (sometimes several days) before Amazon S3 actually deletes the objects. The system queues the work asynchronously . Billing for the storage stops when the rule is met, even if the deletion hasn't occurred yet .
Versioned Buckets: If your bucket has versioning enabled, you can set up separate rules to delete noncurrent versions of objects. You must specify the number of days after they become noncurrent .
Test Thoroughly: To prevent accidental data loss, always test your lifecycle rules on non-critical data first .
Multiple Rules: If you have multiple rules that could apply, Amazon S3 follows a general rule where permanent deletion takes priority over other actions .