下一次我们会来分析关闭Lazy Loading的情况下,如何显示加载相关实体,即Explicit Loading。 上一回我们在《Entity Framework加载相关实体——Lazy Loading》分析了Lazy Loading,这一回我们来分析一下在关闭Lazy Loading的情况下,如果显式加载实体。 数据库我们依旧使用Lazy Loading中使用的数据库。之前我们分析过来,当Lazy ...
Lazy Loading vs. Eager Loading While lazy loading delays the initialization of a resource, eager loading initializes or loads a resource as soon as the code is executed. Eager loading also involves pre-loading related entities referenced by a resource. For example, a PHP script with an include...
Lesser database queries:Unlike the lazy loading strategy, eager loading involves fewer database queries. Because all resources are loaded at once, the client does not repeatedly have to query the backend to load other parts of the page Simplified code:Unlike lazy loading, eager loading avoids the...
Lazy loading 中又使用Eager loading 如果在启用Lazy loading后又使用了Include方法来使用Eager loading,那么实际上是Eager loading在起作用,这样EF Core实体的导航属性不会再单独开启数据库连接去数据库查询数据,而是用sql语句的join预先在数据库中查询数据: 假设我们现在有Person实体里面有个Book导航属性,返回ICollection<...
vue-lazyload是在main.js文件中引入,不会被webpack进行编译,因此vue-lazyload无法获得正确的图片地址,所以直接写相对地址就无法获取到图片正确地址 第四步写loading图片的样式(具体怎么写样式根据情况来,... Activity、Dialog、PopupWindow、Toast比较 Activity、Dialog、PopupWindow、Toast比较 先看一下各个窗口类型表格: ...
看来大家还对ActiveRecord的lazy loading和eager loading不是很清楚 ActiveRecord默认是lazy loading的,而加上:include选项后可以指定eager loading一些字段 :include - specify second-order associations that should be eager loaded when the c ...
Eager Loading is a data loading strategy in Entity Framework where we load the related entities from the database along with the main entity in a single query. This is in contrast to Lazy Loading, where we load the related entities only when explicitly accessed. It is particularly useful when...
In software development, efficient data retrieval is a critical aspect of creating high-performance applications. When working with databases, developers often face choices between loading strategies, two of the most common being eager loading and lazy loading. In the context of .NET Core, understandi...
Lazy Loading:Optimizes initial load time by loading modules only when required. Enhances performance and resource management, especially in larger applications. Implementation Considerations Eager Loading:Suitable for smaller applications or scenarios where immediate availability of modules is preferred. Simplifi...
.UseEagerLoadingwhen you are sure that you will beusingrelated entitieswiththe main entity everywhere.LazyLoading:Incaseoflazy loading, relatedobjects(child objects) are not loaded automaticallywithits parentobjectuntil they are requested.BydefaultLINQsupports lazy loading.Whentouse:UseLazyLoadingwhen you...