#db_session在两个route中不会相互影响,虽然db_session是同一个#在 flask_sqlalchemy.SQLAlchemy类的定义中有self.session = self.create_scoped_session(session_options)以及最后返回的#returnorm.scoped_session(self.create_session(options), scopefunc=scopefunc)可以追溯到#sqlalchemy.orm.session与sqlalchemy.or...
self.session = self.create_scoped_session(session_options) 以及最后返回的 return orm.scoped_session(self.create_session(options), scopefunc=scopefunc) 可以看到使用的是sqlalchemy.orm.scoped_session 线程安全:scoped_session 结论:scoped_session会为每一个请求创建独立的session, 由线程id或者_app_ctx_stack...
}using(varscope =serviceProvider.CreateScope()) {varscopedProvider =scope.ServiceProvider;//If loggingDefinitions is null, then there is no provider yetvarloggingDefinitions = scopedProvider.GetService<LoggingDefinitions>();if(loggingDefinitions !=null) {//Because IDbContextOptions cannot yet be resol...
CreateTime).ValueGeneratedNever(); entity.Property(e => e.MsgSvrId) .HasColumnType("INTERGER") .HasColumnName("MsgSvrID"); entity.Property(e => e.RevokeSvrId) .HasColumnType("INTERGER") .HasColumnName("RevokeSvrID"); }); modelBuilder.Entity<Session>(entity => { entity.HasKey(e =...
CreateProxy<TEntity>(DbContext, Object[]) Creates a proxy instance for an entity type if proxy creation has been turned on. Applies to ProductVersions Entity Framework Core1.0, 1.1, 2.0, 2.1, 2.2, 3.0, 3.1, 5.0, 6.0, 7.0, 8.0, 9.0...
def database_setup(): engine = create_engine( os.getenv('DATABASE_URL'), pool_recycle=3600, pool_size=5) Base.metadata.bind = engine return scoped_session(sessionmaker(autocommit=False, autoflush=False, bind=engine)) # api.py from models import database_setup conn = database_setup() @...
}using(varscope =serviceProvider.CreateScope()) {varscopedProvider =scope.ServiceProvider;//If loggingDefinitions is null, then there is no provider yetvarloggingDefinitions = scopedProvider.GetService();if(loggingDefinitions !=null) {//Because IDbContextOptions cannot yet be resolved from the inter...
ScopedAllowImplicitCollectionCreate_UNSAFE unsafeCreateCollection(opCtx, /* forceCSRAsUnknownAfterCollectionCreation */ true); Status createStatus = db->userCreateNS( opCtx, nss, collectionOptions, createDefaultIndexes, params.idIndexSpec); if (!createStatus.isOK()) { return createStatus; } } w...
DB实例，并且之后的查询都使用这个*gorm.DB实例。比如db.Unscoped().Session(&gorm.Session{})。
CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'password@123'; 1. CREATE DATABASE SCOPED CREDENTIAL MongoDB WITH IDENTITY = admin, Secret = admin123; 1. 2. LOCATION format '<type>://<server>[:<port>]'. CREATE EXTERNAL DATA SOURCE MongoDBSource ...