名称检测类型单位(UCUM)说明 microsoft.entityframeworkcore.execution_strategy_operation_failures ObservableCounter {failure} 由IExecutionStrategy 执行的失败操作的累积次数。从Entity Framework Core 9.0 开始可用。指标:microsoft.entityframeworkcore.optimistic_concurrency_failures展开...
Optimistic concurrency works the same way with stored procedures as it does without. The stored procedure should:Use a concurrency token in a WHERE clause to ensure that the row is only updated if it has a valid token. The value used for the concurrency token is typically, but does not ...
名前インストルメントの種類単位(UCUM)説明 microsoft.entityframeworkcore.optimistic_concurrency_failures ObservableCounter {failure} オプティミスティック同時実行の失敗の累積数。Entity Framework Core 9.0 以降で利用可能。イベント カウンター (レガシ)EF Core は、標準の .NET イベント カウンター...
EF Core 3.0新增了侦听器功能,允许在实际执行操作之前或之后插入自定义操作,利用这个功能可以实现数据审计的自动化。为此需要做些前期准备。 审计实体接口 乐观并发接口 /// ///乐观并发接口 /// publicinterfaceIOptimisticConcurrencySupported { /// ///行版本,乐观并发锁 /// [ConcurrencyCheck] string? Concurre...
The MongoDB EF Core provider from its 8.1.0 release supports transactions and optimistic concurrency. What this means is that by default,SaveChangesandSaveChangesAsyncare transactional. This will empower automatic rollback of operations in production grade workloads in case of any failures and ensure ...
> dotnet counters monitor Microsoft.EntityFrameworkCore -p 49496 [Microsoft.EntityFrameworkCore] Active DbContexts 1 Execution Strategy Operation Failures (Count / 1 sec) 0 Execution Strategy Operation Failures (Total) 0 Optimistic Concurrency Failures (Count / 1 sec) 0 Optimistic Concurrency Failures ...
Optimistic Concurrency(乐观并发)当另一个用户从数据库中获取数据后,如果你试图对该数据进行更改并提交,这将被阻止; Async SaveChanges (异步保存)当数据库处理请求时,释放当前线程以处理别的请求; Transactions(事务)意味着,SaveChanges总是一个原子操作(要么全部成功,要么对数据加做任何修改(回滚)),同时提供API,让两...
EF Core通过锁定机制(Locking Mechanism)和乐观并发控制(Optimistic Concurrency Control)提供了强大的并发支持。例如,当多个用户尝试同时更新同一个AirQualityReading记录时,EF Core可以自动检测并解决冲突,保证只有最新的更改被提交到数据库中。 让我们来看一个具体的事务处理示例。假设在一个空气质量监测系统中,需要同步...
Optimistic Concurrency(乐观并发)当另一个用户从数据库中获取数据后,如果你试图对该数据进行更改并提交,这将被阻止; Async SaveChanges (异步保存)当数据库处理请求时,释放当前线程以处理别的请求; Transactions(事务)意味着,SaveChanges总是一个原子操作(要么全部成功,要么对数据加做任何修改(回滚)),同时提供API,让两...
SQL Server automaticoptimistic concurrencyis handled usingrowversioncolumns. Arowversionis an 8-byte opaque value passed between database, client, and server. By default, SqlClient exposesrowversiontypes asbyte[], despite mutable reference types being a bad match forrowversionsemantics. In EF8, it...