High-Performance Microservices with .NET 10

Today’s digital products need to be fast, stable, and ready to grow. Users expect applications to load quickly, work smoothly, and stay online even when many people use them at the same time. Businesses also want systems that are easy to update, easy to scale, and cost-effective to maintain.

In the past, many applications were built as monolithic systems, where everything lives inside one large codebase. While this approach works in the beginning, it becomes difficult to manage as the product grows. Adding new features takes more time, scaling becomes expensive, and a single failure can affect the entire system.

This is where microservices architecture becomes useful. When combined with .NET 10, microservices help businesses build systems that are fast, flexible, and ready for the future.

We design and build high-performance microservices using the latest .NET technologies. We help startups and large companies create systems that scale smoothly and perform well under real-world conditions.

This guide explains:

What microservices are
Why .NET 10 is a strong choice
Core principles for high performance

How to build fast and efficient microservices

Common mistakes to avoid
How Sparkle Web approaches microservices development

What Are Microservices?

Microservices architecture is a way of building applications by breaking them into small, independent services. Each service focuses on one specific business task and works on its own.

Instead of building one large application, you build many smaller services that work together.

Key Features of Microservices

Microservices are:

Independent – each service runs separately
Deployable on its own – you can update one service without affecting others
Loosely connected – services talk to each other through APIs or messages

Scalable – each service can scale based on its own needs

Flexible – teams can work on different services at the same time

Example

In a traditional monolithic e-commerce app, everything might be inside one system:

Users
Products
Orders

Payments

Notifications

In a microservices system, these become separate services:

User Service
Product Catalog Service
Order Service

Payment Service

Notification Service

Each service:

Has its own logic
Can be updated independently
Can scale based on traffic

This makes the system easier to manage and faster to improve.

Why Choose .NET 10 for Microservices?

.NET 10 is built on years of performance improvements from earlier versions of .NET Core and .NET. It is designed to be fast, efficient, and cloud-ready, which makes it a great fit for microservices.

Key Benefits of .NET 10

.NET 10 offers:

High speed and fast response times
Low memory usage
Strong support for async programming

Simple APIs for lightweight services

Built-in tools for dependency handling
Excellent support for containers and cloud platforms

ASP.NET Core, which runs on .NET, is known for handling a very large number of requests efficiently. This makes it ideal for services that receive high traffic.

Core Principles of High-Performance Microservices

Performance does not start with code. It starts with good design choices.

1. One Responsibility per Service

Each microservice should do only one job and do it well.

Bad practice:

One service handling users, payments, and notifications

Good practice:

User Service handles user data
Payment Service handles payments
The Notification Service sends messages

This approach:

Keeps code simple
Makes testing easier
Improves performance and stability

2. Stateless Services

A stateless service does not store user session data in memory.

Why is this important?

Services can scale easily
Any request can go to any server
No special session handling is needed

Instead of memory, store data in:

Databases
Redis or distributed cache
External storage systems

This allows your system to grow without performance issues.

3. Database per Microservice

Each microservice should manage its own database.

Sharing a database:

Creates tight connections between services
Slows down performance
Makes changes risky

When each service owns its data:

Changes are safer
Performance improves
Scaling is easier

Building a High-Performance Microservice with .NET 10

Step 1: Use Minimal APIs

Minimal APIs reduce unnecessary setup and make services faster to start.

Example:

var builder = WebApplication.CreateBuilder(args);
var app = builder.Build();

app.MapGet("/health", () => Results.Ok("Service is running"));

app.Run();

Benefits:

Faster startup
Lower memory use
Clean and simple code

Ideal for microservices

Step 2: Use Async Code Everywhere

Blocking code slows down your system, especially under heavy load.

Blocking example:

var data = repository.GetData();

Async example:

var data = await repository.GetDataAsync();

Async programming:

Uses fewer threads
Handles more requests at once
Improves response times

High-Performance Data Access

Use Lightweight Data Tools

Entity Framework Core is powerful, but for services that read data often, lightweight tools like Dapper can be faster.

Example:

var products = await connection.QueryAsync<Product>(
    "SELECT * FROM Products WHERE IsActive = 1");

Benefits:

Faster queries
Less memory usage
Better control over SQL

Optimize Database Usage

Good practices include:

Adding proper indexes
Avoiding too many database calls
Caching frequently used data

Keeping queries simple

Caching for Better Performance

Caching reduces database load and improves speed.

Use Redis or Distributed Cache

Example:

var cached = await redis.GetStringAsync("product_123");
if (cached != null)
    return JsonSerializer.Deserialize<Product>(cached);

// Fetch from DB and save to cache

Benefits:

Faster responses
Lower database usage
Better performance under high traffic

Communication Between Microservices

Prefer Asynchronous Messaging

Instead of calling services directly all the time, use message systems like:

RabbitMQ
Azure Service Bus
Kafka

This approach:

Reduces delays
Avoids tight connections
Prevents failures from spreading

Resilience and Stability

Handle Failures Gracefully

Use tools like Polly to retry failed requests and prevent system overload.

Example:

services.AddHttpClient("order-service")
    .AddTransientHttpErrorPolicy(policy =>
        policy.WaitAndRetryAsync(3, retry => TimeSpan.FromMilliseconds(200)));

This:

Improves reliability
Keeps systems stable during issues

Security Without Slowing Things Down

Use JWT Authentication

JWT tokens are:

Fast
Stateless
Easy to scale

Example:

services.AddAuthentication("Bearer")
.AddJwtBearer();

Secure Internal Communication

Use:

API gateways
Private networks
Secure certificates

Containerization and Deployment

Use Docker for Each Service

Example:

FROM mcr.microsoft.com/dotnet/aspnet:10.0
WORKDIR /app
COPY . .
ENTRYPOINT ["dotnet", "ProductService.dll"]

Benefits:

Same environment everywhere
Faster deployments
Easy scaling

Monitoring and Observability

Logging

Use structured logging tools like Serilog:

Log.Information("Order created with ID {OrderId}", orderId);

Metrics and Tracing

Tools like:

OpenTelemetry
Prometheus
Grafana

help you:

Detect slow endpoints
Track memory usage
Monitor traffic patterns

Performance Testing

Before going live:

Run load tests
Measure response times
Find slow areas early

Tools:

k6
JMeter

Common Performance Mistakes to Avoid

Too many service-to-service calls
Large data responses
Blocking async code

Shared databases

No caching

Avoiding these mistakes saves cost and improves speed.

How We Build High-Performance .NET Microservices

At Sparkle Web, we focus on building systems that last.

Our process includes:

Strong service design
Performance-focused coding
Cloud-ready deployment

Secure and stable systems

Ongoing monitoring and improvement

We help businesses:

Reduce infrastructure costs
Handle high traffic smoothly
Release features faster

Scale without rebuilding everything

Conclusion

High-performance microservices are not about using more servers. They are about:

Smart design
Clean code
Efficient data handling

Continuous improvement

With .NET 10, you get:

Excellent performance
Cloud-ready tools
High developer productivity

Strong security

When built correctly, microservices help your business grow faster, stay reliable, and deliver better user experiences. Contact us!

Blog Details

30

How to Build High-Performance Microservices Using .NET 10

What Are Microservices?

Key Features of Microservices

Example

Why Choose .NET 10 for Microservices?

Key Benefits of .NET 10

Core Principles of High-Performance Microservices

1. One Responsibility per Service

2. Stateless Services

3. Database per Microservice

Building a High-Performance Microservice with .NET 10

Step 1: Use Minimal APIs

Step 2: Use Async Code Everywhere

High-Performance Data Access

Use Lightweight Data Tools

Optimize Database Usage

Caching for Better Performance

Use Redis or Distributed Cache

Communication Between Microservices

Prefer Asynchronous Messaging

Resilience and Stability

Handle Failures Gracefully

Security Without Slowing Things Down

Use JWT Authentication

Secure Internal Communication

Containerization and Deployment

Use Docker for Each Service

Monitoring and Observability

Logging

Metrics and Tracing

Performance Testing

Common Performance Mistakes to Avoid

How We Build High-Performance .NET Microservices

Conclusion

Author

Dipak Pakhale

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