Using Write-Behind with Bulk Operations

Add New Items Using AddBulk API

Member	Description
IDictionary AddBulk(string[] keys, CacheItem[] items, DSWriteOption dsWriteOption, DataSourceItemsAddedCallback onDataSourceItemsAdded)	Adds items in cache using the default provider
IDictionary AddBulk(string[] keys, CacheItem[] items, DSWriteOption dsWriteOption, string providerName, DataSourceItemsAddedCallback onDataSourceItemsAdded)	Adds item in cache using the specified provider

protected void OnDataSourceItemsAdded(IDictionary iDict)
{
    //Perform appropriate actions upon response
}

private void BulkAddTest()
{
    try
    {
      String[] key = { "Customer:David:1001", "Customer:Paul:1002", "Customer:Dave:1003", "Customer:Mathew:1004" };

       //create custom objects of Product type
      CacheItem[] data = GetCacheItems(keys.Length);

      IDictionary failedItems = cache.AddBulk(keys, data, DSWriteOption.WriteBehind, OnDataSourceItemsAdded);
      //verify updated items in the main source
    }
    catch (Exception exp)
    {
        //handle exception
    }
}

Update Existing Items Using InsertBulk API

Member	Description
IDictionary InsertBulk(string[] keys, CacheItem[] items, DSWriteOption dsWriteOption, DataSourceItemsUpdatedCallback onDataSourceItemUpdatedCallback)	Updates items in cache using the default provider and specified callback
IDictionary InsertBulk(string[] keys, CacheItem[] items, DSWriteOption dsWriteOption, string providerName, DataSourceItemsUpdatedCallback onDataSourceItemUpdatedCallback)	Updates items in cache by using the specified provider and callback

protected void OnDataSourceItemsUpdated(IDictionary iDict)
{
    //Perform appropriate actions upon response
}

private void BulkUpdateTest()
{
    try
    {
      String[] key = { "Customer:David:1001", "Customer:Paul:1002", "Customer:Dave:1003", "Customer:Mathew:1004" };

      //create new  custom objects for above mentioned keys of Product type
      CacheItem[] data = cache.GetCacheItems(keys.Length);

      IDictionary failedItems = cache.InsertBulk(keys, data, DSWriteOption.WriteBehind, OnDataSourceItemsUpdated);

        //verify updated items in the main source
    }
    catch (Exception exp)
    {
        //handle exception
    }
}

Delete Existing Items with DeleteBulk API

Member	Description
void DeleteBulk(string[] keys, DSWriteOption dsWriteOption, DataSourceItemsRemovedCallback onDataSourceItemsRemovedCallback)	Deletes items in cache using the default provider and specified callback

protected void OnDataSourceItemsRemoved(IDictionary iDict)
{
    //Perform appropriate actions upon response
}

private void BulkDeleteTest()
{
    try
    {
      String[] key = { "Customer:David:1001", "Customer:Paul:1002", "Customer:Dave:1003", "Customer:Mathew:1004" };

      IDictionary failedItems = cache.DeleteBulk(keys, DSWriteOption.WriteBehind, OnDataSourceItemsRemoved);
        //verify items deleted from the main source
    }
    catch (Exception exp)
    {
        //handle exception
    }
 }

See Also

Configuring WriteThru Provider

Using Write-Behind with Basic Operations

Using Write-Behind with Asynchronous Operations

Monitor Write-Through Counters

Configuring Write-Through Provider