Reducing application startup time

The process of configuring NHibernate is fairly intensive and takes time. NHibernate has to load, parse, and compile all our mappings and reflect the model. In this recipe, we'll show you how to reduce the start up time of your NHibernate application.

Getting ready

Complete the Configuring NHibernate with App.config recipe discussed in the Chapter 1, The Configuration and Schema.

How to do it…

1. Add a reference to System.Configuration.dll.
2. Add a new class named ConfigurationBuilder:

    using System;
    using System.Configuration;
    using System.IO;
    using System.Reflection;
    using System.Runtime.Serialization.Formatters.Binary;
    using Configuration = NHibernate.Cfg.Configuration;
    namespace ConfigByAppConfig
    {
        public class ConfigurationBuilder
       {
          private const string SERIALIZED_CFG = "configuration.bin";
        }
    }

3. Add a method named Build with the following code:

    public Configuration Build()
    {
      Configuration cfg = LoadConfigurationFromFile...