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# Interface IDbCachingPolicy

Caching policy: defines which queries should be cached.

###### Namespace: Apache.Ignite.EntityFramework

###### Assembly: Apache.Ignite.EntityFramework.dll

##### Syntax

    public interface IDbCachingPolicy

### Methods

#### CanBeCached(DbQueryInfo)

Determines whether the specified query can be cached.

##### Declaration

    bool CanBeCached(DbQueryInfo queryInfo)

##### Parameters

Type | Name | Description
--- | --- | ---
DbQueryInfo | queryInfo | The query information.

##### Returns

Type | Description
--- | ---
System.Boolean | `true` if the specified query can be cached; otherwise, `false`.

#### CanBeCached(DbQueryInfo, Int32)

Determines whether specified number of rows should be cached.

##### Declaration

    bool CanBeCached(DbQueryInfo queryInfo, int rowCount)

##### Parameters

Type | Name | Description
--- | --- | ---
DbQueryInfo | queryInfo | The query information.
System.Int32 | rowCount | The count of fetched rows.

##### Returns

Type | Description
--- | ---
System.Boolean |

#### GetCachingMode(DbQueryInfo)

Gets the caching strategy for a give query.

##### Declaration

    DbCachingMode GetCachingMode(DbQueryInfo queryInfo)

##### Parameters

Type | Name | Description
--- | --- | ---
DbQueryInfo | queryInfo | The query information.

##### Returns

Type | Description
--- | ---
DbCachingMode | Caching strategy for the query.

#### GetExpirationTimeout(DbQueryInfo)

Gets the absolute expiration timeout for a given query.

##### Declaration

    TimeSpan GetExpirationTimeout(DbQueryInfo queryInfo)

##### Parameters

Type | Name | Description
--- | --- | ---
DbQueryInfo | queryInfo | The query information.

##### Returns

Type | Description
--- | ---
System.TimeSpan | Expiration timeout. System.TimeSpan.MaxValue for no expiration.