DocumentCollection.DefaultTimeToLive Property
Definition
Important
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Gets the default time to live in seconds for documents in a collection from the Azure Cosmos DB service.
[Newtonsoft.Json.JsonProperty(NullValueHandling=Newtonsoft.Json.NullValueHandling.Ignore, PropertyName="defaultTtl")]
public int? DefaultTimeToLive { get; set; }[<Newtonsoft.Json.JsonProperty(NullValueHandling=Newtonsoft.Json.NullValueHandling.Ignore, PropertyName="defaultTtl")>]
member this.DefaultTimeToLive : Nullable<int> with get, setPublic Property DefaultTimeToLive As Nullable(Of Integer)Property Value
It is an optional property.
A valid value must be either a nonzero positive integer, '-1', or null.
By default, DefaultTimeToLive is set to null meaning the time to live is turned off for the collection.
The unit of measurement is seconds. The maximum allowed value is 2147483647.
- Attributes
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Newtonsoft.Json.JsonPropertyAttribute
Examples
The example below disables time-to-live on a collection.
collection.DefaultTimeToLive = null;
The example below enables time-to-live on a collection. By default, all the documents never expire.
collection.DefaultTimeToLive = -1;
The example below enables time-to-live on a collection. By default, the document will expire after 1000 seconds since its last write time.
collection.DefaultTimeToLive = 1000;
Remarks
The DefaultTimeToLive will be applied to all the documents in the collection as the default time-to-live policy. The individual document could override the default time-to-live policy by setting its TimeToLive.
When the DefaultTimeToLive is null, the time-to-live will be turned off for the collection. It means all the documents will never expire. The individual document's TimeToLive will be disregarded.
When the DefaultTimeToLive is '-1', the time-to-live will be turned on for the collection. By default, all the documents will never expire. The individual document could be given a specific time-to-live value by setting its TimeToLive. The document's TimeToLive will be honored, and the expired documents will be deleted in background.
When the DefaultTimeToLive is a nonzero positive integer, the time-to-live will be turned on for the collection. And a default time-to-live in seconds will be applied to all the documents. A document will be expired after the specified DefaultTimeToLive value in seconds since its last write time. The individual document could override the default time-to-live policy by setting its TimeToLive. Please refer to the TimeToLive for more details about evaluating the final time-to-live policy of a document.
