A LazyProxy can be used for IoC containers to improve performance by changing the resolve behavior.
More info can be found in the article about Lazy Dependency Injection for .NET.
The library provides in NuGet.
Install-Package LazyProxy.Unity Consider the following service:
publicinterfaceIMyService{voidFoo();}publicclassMyService:IMyService{publicMyService()=>Console.WriteLine("Ctor");publicvoidFoo()=>Console.WriteLine("Foo");}A lazy registration for this service can be added like this:
// Creating a containerusingvarcontainer=newUnityContainer();// Adding a lazy registrationcontainer.RegisterLazy<IMyService,MyService>();Console.WriteLine("Resolving the service...");varservice=container.Resolve<IMyService>();Console.WriteLine("Executing the 'Foo' method...");service.Foo();The output for this example:
Resolving the service... Executing the 'Foo' method... Ctor Foo Currently, LazyProxy.Unity supports the following:
- Registration of types by interfaces;
- Passing lifetime managers;
- Passing injection members;
- Resolving by child containers.
Here is a result of the Benchmark test
BenchmarkDotNet=v0.10.14, OS=Windows 10.0.17134 Intel Core i5-6600K CPU 3.50GHz (Skylake), 1 CPU, 4 logical and 4 physical cores Frequency=3421881 Hz, Resolution=292.2369 ns, Timer=TSC .NET Core SDK=2.1.104 [Host] : .NET Core 2.0.6 (CoreCLR 4.6.26212.01, CoreFX 4.6.26212.01), 64bit RyuJIT Job-WRIASW : .NET Framework 4.7.1 (CLR 4.0.30319.42000), 64bit RyuJIT-v4.7.3131.0 Job-AHTPGH : .NET Core 2.0.6 (CoreCLR 4.6.26212.01, CoreFX 4.6.26212.01), 64bit RyuJIT InvocationCount=1 LaunchCount=10 RunStrategy=ColdStart TargetCount=1 Method | Runtime | Mean | Error | StdDev | --------------------------- |-------- |------------:|-------------:|------------:| RegisterType | Clr | 4,137.7 us | 413.30 us | 273.37 us | RegisterLazy | Clr | 20,674.2 us | 8,720.50 us | 5,768.07 us | ColdResolveType | Clr | 46,964.2 us | 7,248.30 us | 4,794.30 us | ColdResolveLazy | Clr | 45,114.7 us | 14,851.68 us | 9,823.47 us | HotResolveType | Clr | 11,071.5 us | 537.94 us | 355.81 us | HotResolveLazy | Clr | 459.6 us | 81.59 us | 53.97 us | InvokeMethod | Clr | 360.1 us | 104.89 us | 69.38 us | InvokeLazyMethodFirstTime | Clr | 16,164.2 us | 725.08 us | 479.60 us | InvokeLazyMethodSecondTime | Clr | 315.4 us | 53.41 us | 35.33 us | RegisterType | Core | 3,687.9 us | 395.56 us | 261.64 us | RegisterLazy | Core | 17,750.2 us | 7,664.41 us | 5,069.54 us | ColdResolveType | Core | 50,519.3 us | 2,217.58 us | 1,466.79 us | ColdResolveLazy | Core | 46,829.4 us | 1,848.44 us | 1,222.63 us | HotResolveType | Core | 10,911.2 us | 542.79 us | 359.02 us | HotResolveLazy | Core | 471.4 us | 47.37 us | 31.34 us | InvokeMethod | Core | 333.8 us | 23.26 us | 15.39 us | InvokeLazyMethodFirstTime | Core | 16,226.2 us | 527.92 us | 349.18 us | InvokeLazyMethodSecondTime | Core | 336.4 us | 68.45 us | 45.28 us | // * Legends * Mean : Arithmetic mean of all measurements Error : Half of 99.9% confidence interval StdDev : Standard deviation of all measurements 1 us : 1 Microsecond (0.000001 sec) This project is licensed under the Apache License, Version 2.0. - see the LICENSE file for details.