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LockModel with a TTL Index
public class LockModel
public string Id { get; set; }
/// <summary>
/// I'm going to set this to the moment in time when the lock should be cleared.
/// </summary>
public DateTime ExpireAt { get; set; }
// In our LockProvider constructor...
// Specify a TTL index on the ExpiryPoint field.
collection.Indexes.CreateOne(new CreateIndexModel<LockModel>(
Builders<LockModel>.IndexKeys.Ascending(l => l.ExpireAt),
new CreateIndexOptions
ExpireAfter = TimeSpan.Zero
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