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Amazon DynamoDB
API Reference (API Version 2012-08-10)

UpdateTimeToLive

Specify the lifetime of individual table items. The database automatically removes the item at the expiration of the item. The UpdateTimeToLive method will enable or disable TTL for the specified table. A successful UpdateTimeToLive call returns the current TimeToLiveSpecification; it may take up to one hour for the change to fully process. Any additional UpdateTimeToLive calls for the same table during this one hour duration result in a ValidationException.

TTL compares the current time in epoch time format to the time stored in the TTL attribute of an item. If the epoch time value stored in the attribute is less than the current time, the item is marked as expired and subsequently deleted.

Note

The epoch time format is the number of seconds elapsed since 12:00:00 AM January 1st, 1970 UTC.

DynamoDB deletes expired items on a best-effort basis to ensure availability of throughput for other data operations.

Important

DynamoDB typically deletes expired items within two days of expiration. The exact duration within which an item gets deleted after expiration is specific to the nature of the workload. Items that have expired and not been deleted will still show up in reads, queries, and scans.

As items are deleted, they are removed from any Local Secondary Index and Global Secondary Index immediately in the same eventually consistent way as a standard delete operation.

For more information, see Time To Live in the Amazon DynamoDB Developer Guide.

Request Syntax

Copy
{ "TableName": "string", "TimeToLiveSpecification": { "AttributeName": "string", "Enabled": boolean } }

Request Parameters

The request accepts the following data in JSON format.

Note

In the following list, the required parameters are described first.

TableName

The name of the table to be configured.

Type: String

Length Constraints: Minimum length of 3. Maximum length of 255.

Pattern: [a-zA-Z0-9_.-]+

Required: Yes

TimeToLiveSpecification

Represents the settings used to enable or disable Time to Live for the specified table.

Type: TimeToLiveSpecification object

Required: Yes

Response Syntax

Copy
{ "TimeToLiveSpecification": { "AttributeName": "string", "Enabled": boolean } }

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

TimeToLiveSpecification

Represents the output of an UpdateTimeToLive operation.

Type: TimeToLiveSpecification object

Errors

For information about the errors that are common to all actions, see Common Errors.

InternalServerError

An error occurred on the server side.

HTTP Status Code: 500

LimitExceededException

The number of concurrent table requests (cumulative number of tables in the CREATING, DELETING or UPDATING state) exceeds the maximum allowed of 10.

Also, for tables with secondary indexes, only one of those tables can be in the CREATING state at any point in time. Do not attempt to create more than one such table simultaneously.

The total limit of tables in the ACTIVE state is 250.

HTTP Status Code: 400

ResourceInUseException

The operation conflicts with the resource's availability. For example, you attempted to recreate an existing table, or tried to delete a table currently in the CREATING state.

HTTP Status Code: 400

ResourceNotFoundException

The operation tried to access a nonexistent table or index. The resource might not be specified correctly, or its status might not be ACTIVE.

HTTP Status Code: 400

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: