.NET 10 is here, and it’s packed with powerful improvements that make modern development faster, smarter, and more scalable. Whether you're building APIs, cloud-native services, or enterprise apps — these features are worth your attention.
1. Native AOT Improvements
What’s new?
.NET 10 refines Native AOT (Ahead-of-Time) compilation with broader platform support and faster startup times.
Why it matters:
- Blazing-fast startup performance
- Smaller app size (great for microservices)
- Ideal for containerized deployments
Use it when: Performance and cold start latency are critical.
2. Required Members in Records & Classes
You can now enforce required properties directly in class/record declarations.
public class User
{
public required string Name { get; init; }
public required string Email { get; init; }
}
No more null defaults or missing fields when instantiating objects!
3. New LINQ Enhancements
.NET 10 introduces:
- .TakeLast(), .SkipLast()
- Performance-optimized .Where() + .Select()
- Improvements in GroupBy() behavior
Querying collections just got more expressive and efficient.
4. Streamlined Minimal APIs
Minimal APIs continue to evolve with better:
- Model binding for complex types
- Built-in validation
- Output caching
app.MapPost("/create", (User user) => {
// now supports validation annotations!
});
Great for microservices, internal APIs, and prototypes.
5. Built-in Rate Limiting Middleware
Add rate limiting with just a few lines of code:
builder.Services.AddRateLimiter(options =>
{
options.GlobalLimiter = PartitionedRateLimiter.Create<HttpContext, string>(...)
});
Helps protect your APIs from abuse without needing 3rd-party tools.
6. Better Observability: OpenTelemetry + Logging
.NET 10 deeply integrates OpenTelemetry for tracing and metrics.
Built-in support for:
- Structured logging
- Distributed tracing
- Correlation IDs for requests
Monitor, debug, and optimize like a pro.
7. Improvements in Source Generators
You can now:
- Write incremental source generators
- Use new APIs to introspect code
- Generate boilerplate at compile-time
Used extensively in JSON serialization, DI, and Blazor!
8. Enhanced JSON Support (System.Text.Json)
Major improvements:
- Better polymorphic serialization
- JsonInclude on fields
- Reduced allocations
Easier to work with complex object hierarchies without Newtonsoft.Json.
9. Parallel.ForEachAsync in TPL
Concurrent async processing just got easier:
await Parallel.ForEachAsync(items, async (item, token) =>
{
await ProcessAsync(item);
});
Super useful for batch processing or I/O-heavy tasks.
10. Clean Code with File-Scoped Types and Imports
Say goodbye to unnecessary boilerplate.
file class InternalHelper { ... }
Keeps your code modular and maintainable.
Bonus: C# 12 Enhancements
.NET 10 ships with C# 12, which includes:
- Primary constructors in classes
- Collection expressions
- Alias directives for any type
using CustomerList = System.Collections.Generic.List<Customer>;
Final Thoughts
.NET 10 is more than just a version bump — it’s a productivity boost. From performance to developer experience, these features are built to help you write cleaner, faster, and more reliable code.
What to Do Next?
- Try out one of these features in a small project
- Share your experiences with the community
- Comment your favorite feature or one you're excited to explore!
Top comments (1)
It's important to note that .NET 10 is not fully released, it is still in preview.
Rate limiting middleware was introduced with .NET 7
Your information about the C# version with .NET 10 is inaccurate:
C# 12 came out in 2023 with .NET 8 learn.microsoft.com/en-us/dotnet/c...
C# 13 came in 2024 with .NET 9
C# 14 comes with .NET 10 with a projected release date of November 2025 learn.microsoft.com/en-us/dotnet/c...
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