My Story & Features from .NET Core 3.0

How I’ve met .NET Core and a little story about my drama with the framework. This talk will reveal some of my projects and experience with .NET Core and what we can learn from them. We will take a look of some interesting features from .NET Core 3.0 and in the end why I love this framework and the way Microsoft is going.

Transcript

1. vladimirgeorgiev.com Vladimir Georgiev Software Development Lead @ Concep vladimirgeorgiev.com My Story & Features from .NET Core 3.0
2. vladimirgeorgiev.com Благодарим за подкрепата! vladimirgeorgiev.com
3. vladimirgeorgiev.com vladimirgeorgiev.com
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7. vladimirgeorgiev.com Plugin architecture with Asp.Net Core vladimirgeorgiev.com
8. vladimirgeorgiev.com Web App eCommerce Adapter Abstract App Plugin App 1
9. vladimirgeorgiev.com Web App eCommerce Adapter Abstract App Plugin App 2 Plugin App 1 Plugin App 4 Plugin App 3 Assembly AppDomain Caching PluginManager TypeFinder
10. vladimirgeorgiev.com What I learn? Rewriting is not always fun Rewriting takes time Don’t rewrite if you aren’t into the code Don’t rewrite apps without business value
11. vladimirgeorgiev.com SSO with IdentityServer & Asp.Net Core vladimirgeorgiev.com
12. vladimirgeorgiev.com Deployment App Customer App Customer App Customer App Customer App Web API External Systems vladimirgeorgiev.com Basic Auth Basic Auth Basic Auth
13. vladimirgeorgiev.com Auth Server Deployment App Customer App Customer App Customer App Customer App Web API External Systems vladimirgeorgiev.com
14. vladimirgeorgiev.com What I have learned? Understand business Be patient But I want new technologies… Business will ask for it
15. vladimirgeorgiev.com ASP.NET Core 3.0 Features
16. vladimirgeorgiev.com Applications now have executables by default
17. vladimirgeorgiev.com Framework Dependent Self-Contained
18. vladimirgeorgiev.com dotnet build now copies dependencies
19. vladimirgeorgiev.com Json.NET
20. vladimirgeorgiev.com Json.NET
21. vladimirgeorgiev.com Fast in-box JSON Reader Utf8JsonReader
22. vladimirgeorgiev.com Utf8JsonReader DEMO
23. vladimirgeorgiev.com Assembly Metadata Reading MetadataLoadContext in .NET Core 3.0 Same as ReflectionOnlyLoad from .NET Framework Reading assembly metadata without affecting the caller’s application domain Available in System.Reflection.MetadataLoadContext Loaded into the reflection-only context
24. vladimirgeorgiev.com Assembly Metadata Reading var paths = new string[] { @"C:\myapp\app.dll" }; var resolver = new PathAssemblyResolver(paths); using (var lc = new MetadataLoadContext(resolver)) { Assembly a = lc.LoadFromAssemblyName("app"); Type myInterface = a.GetType("App.IReconnectApplication"); foreach (Type t in a.GetTypes()) { if (t.IsClass && myInterface.IsAssignableFrom(t)) Console.WriteLine($"Class {t.FullName}"); } }
25. vladimirgeorgiev.com Assembly Metadata Reading var paths = new string[] { @"C:\myapp\app.dll" }; var resolver = new PathAssemblyResolver(paths); using (var lc = new MetadataLoadContext(resolver)) { Assembly a = lc.LoadFromAssemblyName("app"); Type myInterface = a.GetType("App.IReconnectApplication"); foreach (Type t in a.GetTypes()) { if (t.IsClass && myInterface.IsAssignableFrom(t)) Console.WriteLine($"Class {t.FullName}"); } }
26. vladimirgeorgiev.com Assembly Metadata Reading var paths = new string[] { @"C:\myapp\app.dll" }; var resolver = new PathAssemblyResolver(paths); using (var lc = new MetadataLoadContext(resolver)) { Assembly a = lc.LoadFromAssemblyName("app"); Type myInterface = a.GetType("App.IReconnectApplication"); foreach (Type t in a.GetTypes()) { if (t.IsClass && myInterface.IsAssignableFrom(t)) Console.WriteLine($"Class {t.FullName}"); } }
27. vladimirgeorgiev.com Assembly Metadata Reading var paths = new string[] { @"C:\myapp\app.dll" }; var resolver = new PathAssemblyResolver(paths); using (var lc = new MetadataLoadContext(resolver)) { Assembly a = lc.LoadFromAssemblyName("app"); Type myInterface = a.GetType("App.IReconnectApplication"); foreach (Type t in a.GetTypes()) { if (t.IsClass && myInterface.IsAssignableFrom(t)) Console.WriteLine($"Class {t.FullName}"); } }
28. vladimirgeorgiev.com Assembly Metadata Reading var paths = new string[] { @"C:\myapp\app.dll" }; var resolver = new PathAssemblyResolver(paths); using (var lc = new MetadataLoadContext(resolver)) { Assembly a = lc.LoadFromAssemblyName("app"); Type myInterface = a.GetType("App.IReconnectApplication"); foreach (Type t in a.GetTypes()) { if (t.IsClass && myInterface.IsAssignableFrom(t)) Console.WriteLine($"Class {t.FullName}"); } }
29. vladimirgeorgiev.com Tiered Compilation – How JIT works? App Start JIT App Start JIT Fast Application Loading Low application performance Slow application loading High application performance
30. vladimirgeorgiev.com Tiered Compilation – How Tiered uses JIT? App Start JIT JIT Fast application loading High application performance
31. vladimirgeorgiev.com Tiered Compilation Add MSBuild property to the default property group in project file: Add in configProperties to the runtimeconfig.json: <TieredCompilation>true</TieredCompilation> "System.Runtime.TieredCompilation": true
32. vladimirgeorgiev.com More and more… Cryptography AES-GCM AES-CCM Import/Export of asymmetric public and private keys from standard formats No more need of X.509 certificate IoT Serial Port APIs support on Linux GPIO, PWM, SPI and I2C APIs TLS 1.3 and OpenSSL 1.1.1 on Linux And many more…
33. vladimirgeorgiev.com The Future of .NET Core High performance High quality High developer productivity Multi-platform support Multi-language support Easy deployment Minimize chance of errors
34. vladimirgeorgiev.com Vladimir Georgiev vladimirgeorgiev.com ?