CacheExtensions.GetOrCreateAsync 方法
定义
重要
一些信息与预发行产品相关,相应产品在发行之前可能会进行重大修改。 对于此处提供的信息,Microsoft 不作任何明示或暗示的担保。
重载
GetOrCreateAsync<TItem>(IMemoryCache, Object, Func<ICacheEntry,Task<TItem>>) |
异步获取与此键关联的值(如果存在),或者使用提供的键生成一个新条目,如果未找到该键,则生成来自给定工厂的值。 |
GetOrCreateAsync<TItem>(IMemoryCache, Object, Func<ICacheEntry,Task<TItem>>, MemoryCacheEntryOptions) |
GetOrCreateAsync<TItem>(IMemoryCache, Object, Func<ICacheEntry,Task<TItem>>)
- Source:
- MemoryCacheExtensions.cs
- Source:
- MemoryCacheExtensions.cs
- Source:
- MemoryCacheExtensions.cs
异步获取与此键关联的值(如果存在),或者使用提供的键生成一个新条目,如果未找到该键,则生成来自给定工厂的值。
public:
generic <typename TItem>
[System::Runtime::CompilerServices::Extension]
static System::Threading::Tasks::Task<TItem> ^ GetOrCreateAsync(Microsoft::Extensions::Caching::Memory::IMemoryCache ^ cache, System::Object ^ key, Func<Microsoft::Extensions::Caching::Memory::ICacheEntry ^, System::Threading::Tasks::Task<TItem> ^> ^ factory);
public static System.Threading.Tasks.Task<TItem> GetOrCreateAsync<TItem> (this Microsoft.Extensions.Caching.Memory.IMemoryCache cache, object key, Func<Microsoft.Extensions.Caching.Memory.ICacheEntry,System.Threading.Tasks.Task<TItem>> factory);
public static System.Threading.Tasks.Task<TItem?> GetOrCreateAsync<TItem> (this Microsoft.Extensions.Caching.Memory.IMemoryCache cache, object key, Func<Microsoft.Extensions.Caching.Memory.ICacheEntry,System.Threading.Tasks.Task<TItem>> factory);
static member GetOrCreateAsync : Microsoft.Extensions.Caching.Memory.IMemoryCache * obj * Func<Microsoft.Extensions.Caching.Memory.ICacheEntry, System.Threading.Tasks.Task<'Item>> -> System.Threading.Tasks.Task<'Item>
<Extension()>
Public Function GetOrCreateAsync(Of TItem) (cache As IMemoryCache, key As Object, factory As Func(Of ICacheEntry, Task(Of TItem))) As Task(Of TItem)
类型参数
- TItem
要获取的对象类型。
参数
- cache
- IMemoryCache
IMemoryCache此方法扩展的实例。
- key
- Object
要查找或创建的项的键。
- factory
- Func<ICacheEntry,Task<TItem>>
如果缓存中不存在键,则创建与此键关联的值的工厂任务。
返回
Task<TItem>
表示异步操作的任务对象。
适用于
GetOrCreateAsync<TItem>(IMemoryCache, Object, Func<ICacheEntry,Task<TItem>>, MemoryCacheEntryOptions)
- Source:
- MemoryCacheExtensions.cs
public:
generic <typename TItem>
[System::Runtime::CompilerServices::Extension]
static System::Threading::Tasks::Task<TItem> ^ GetOrCreateAsync(Microsoft::Extensions::Caching::Memory::IMemoryCache ^ cache, System::Object ^ key, Func<Microsoft::Extensions::Caching::Memory::ICacheEntry ^, System::Threading::Tasks::Task<TItem> ^> ^ factory, Microsoft::Extensions::Caching::Memory::MemoryCacheEntryOptions ^ createOptions);
public static System.Threading.Tasks.Task<TItem?> GetOrCreateAsync<TItem> (this Microsoft.Extensions.Caching.Memory.IMemoryCache cache, object key, Func<Microsoft.Extensions.Caching.Memory.ICacheEntry,System.Threading.Tasks.Task<TItem>> factory, Microsoft.Extensions.Caching.Memory.MemoryCacheEntryOptions? createOptions);
static member GetOrCreateAsync : Microsoft.Extensions.Caching.Memory.IMemoryCache * obj * Func<Microsoft.Extensions.Caching.Memory.ICacheEntry, System.Threading.Tasks.Task<'Item>> * Microsoft.Extensions.Caching.Memory.MemoryCacheEntryOptions -> System.Threading.Tasks.Task<'Item>
<Extension()>
Public Function GetOrCreateAsync(Of TItem) (cache As IMemoryCache, key As Object, factory As Func(Of ICacheEntry, Task(Of TItem)), createOptions As MemoryCacheEntryOptions) As Task(Of TItem)
类型参数
- TItem
参数
- cache
- IMemoryCache
- key
- Object
- factory
- Func<ICacheEntry,Task<TItem>>
- createOptions
- MemoryCacheEntryOptions
返回
Task<TItem>
适用于
反馈
https://aka.ms/ContentUserFeedback。
即将发布:在整个 2024 年,我们将逐步淘汰作为内容反馈机制的“GitHub 问题”,并将其取代为新的反馈系统。 有关详细信息,请参阅:提交和查看相关反馈