What is .NET Microservices? How it Works, Benefits & Examples

February 20, 2024
5 minutes read
By DI Solutions
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Introduction of .Net Microservice

Microservices is a structure that develops a single application as a set of different services. Every service runs independently.
Microservices communicate with each other and clients, using lightweight protocols, often over messaging or HTTP.

Microservices are a design pattern in which applications are collections of small, independent modules that communicate with each other using well-defined structures. Every microservice works on a single concept.

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Microservice with .net core

In today’s ever-evolving world, the amount of information and the use of the Internet is increasing proportionally, so there is a need for more reliable and responsive software systems, unlike obsolete chunks of data that incur high maintenance costs in old architecture.

This approach to the program is more interrupted. development is unreliable when upgrading to existing monolithic software. Therefore, the microservice architecture for application development emerged.

Early software architecture design with all business, Database calls, and UI designs in one package. Like Asp.Net Webforms, MVC is a collection of individual projects.

There are downsides, the larger the app, the harder it is to quickly fix bugs/issues and update the app with new features. Application development based on microservice architecture helps solve real-time problems and provides more room for faster application development.

This architecture for software development provides greater flexibility, is lightweight, and can share similar functionality across multiple applications. It is the first way to build and optimize application development for cloud-native models.

How does microservices architecture work?

The classification of components of big, clunky programs is the main goal of microservices architecture. Every microservices do a particular process and function, such as logging, data search, etc. Together, these microservices form a single project.

The clients can use the UI to generate requests. At the same time, the API gateway commissions one or more microservices to perform the requested task. Solving microservices problems is relatively easy.

A microservice system facilitates the creation, operation, scaling, and deployment of each service independently. Other services do not share numbers or functions. Various programs propagate communication using APIs.

The system processes each service according to a specific procedure based on a specific problem. If developers provide additional code, we can classify these services as additional secondary services. This gives developers more ways to fix potential problems even if they are unaware of them.


The microservice architecture contains components depending on the requirements.

API Gateway

The user needs API Gateway as it is an entry point, which forwards the call to the specific services on the back end. Here, the API gateway helps collect the responses from different services and returns the response to the user.


As the name implies, microservices are the services that assist in breaking down a larger service into smaller services that carry out a specific business feature, such as user registration, current orders, or wish lists.


Microservices can either share the same database or an independent database.

Inter-microservices communication

REST or Messaging are the protocols to interact with each other.

.Net Microservices core with examples

Introduction to Ocelot

Ocelot is an open API gateway designed for microservice architecture. .NET Core forms the basis of it. Ocelot has many features like routing, caching, security, rate limiting, etc.
It is a set of middleware designed for more information. We will be creating two simple services for example purposes

I have used the following tools for demonstration.

  • VS 2022 Community Edition (64 bit)– Version 17.4.0 – Preview 2.0
  • Web API
  • .NET 6.0
  • Ocelot
  • Postman
Let us create two web API services one is for Country Service and another is for Student Service

Country Service looks like the following:
Update the launchSettings.json as follows for country Service.

Student Service looks like the following
Update the launchSettings.json as follows for Student Service.

Implement Gateway using Ocelot

Let's go ahead and create another Gateway project. Then install the Ocelot package to the Gateway project.

Install-Package Ocelot

After the installation is complete, let's proceed to update the launchSettings.json file of the gateway project as shown below.
We have to create a JSON file name as ocelot.json at the root project level in the Gateway project. Let us update the file and define the two keys


Routes – an array of objects.
We must now set up our project to use the ocelot.json. file. Please set the configuration in the Gateway Project Program.cs file as below,
Now, let’s configure the Ocelot.json file.

As a last step, to run all services at the same time, right-click on Solution select Properties, and make the following highlighted settings.

Run the below Gateway endpoint and see whether we are getting the expected result
Now, let us execute the below endpoint for the country

When to use Microservices?

    We use microservices architecture:
  • when there are many new things to come.
  • When you'll be releasing features often.
  • When you have many subdomains.
  • When your company is planning to grow.
  • When your company is planning to grow.
  • When you have a big team that can work on different microservices simultaneously.
  • When you have agile, cross-functional teams collaborating on large projects.

Benefits of Dot Net Microservice

Scalability improvements

Each microservice operates independently, and you can add, remove, update, or expand each cloud microservice more easily. Developers can perform these tasks without affecting other microservices in the system.

Improved fault isolation

In a monolithic architecture, when the developer encounters an error in one element of the architecture, it causes the entire architecture to crash. In a microservice architecture, if one service fails, the rest of the application cannot recover because each microservice operates independently.

The benefit of microservice architecture is that developers can implement features that prevent failure. GitLab and other companies also provide various tools for building decentralized microservices to help improve infrastructure.

Program language and technology agnostic

The development team can choose the right language for the job to build microservices applications in any language. The language neutrality of the microservice architecture also allows developers to use their existing skills to their advantage – getting the job done without having to learn a new programming language. Using cloud-based microservices gives developers an advantage as they can access apps from any device regardless of platform.

Simpler to deploy

The microservices architecture allows teams to use individual applications without affecting other services in the architecture. This feature is one of the advantages of microservices that allows developers to add new models without having to rebuild the entire model of the system. Based on the microservice architecture, companies can add new functionality as needed.

Reusability across different areas of business

The organization can share some microservice applications. All instances of a site, including several distinct sites, can utilize the same microservice application, each with various access or payment choices.

Faster time-to-market

Developers can connect this new “microsurgery” to the architecture without worrying about conflicting with other code or causing service disruptions to the entire site.

Development teams working on different microservices don’t have to wait for each other to finish. Companies can rapidly develop and implement new features and improve legacy products as new technologies evolve.

Ability to experiment

With a microservice architecture, the decision to continue testing is easier. It’s easy to roll back new features because each service is independent of the others. If the customer doesn’t like it or the business value isn’t clear, it’s easier to take it back without affecting the rest of the business. If a customer requires a new feature, the microservice architecture means that the customer will experience it in weeks, not months or years.

Outsourcing flexibility

Businesses may need to outsource work to other partners. Many companies are concerned with protecting intellectual property using a schema format. However, the microservices architecture allows an organization to allocate domains only to partners who do not offer core services.

Attractive for engineers

Engineers find microservices architecture attractive and companies have a better chance of finding top talent working on microservice application development. The latest engineering practices and development tools form the basis of microservices. This is a huge advantage for businesses looking to attract professionals.

What is the microservices architecture used for?

Microservice architecture makes application development faster and more efficient. The combination of flexible resources and the ease of use of different technologies allows the cycle to grow faster. Below are some of the most important applications of microservice architecture.

Data processing

Applications running on microservice architecture can process many requests at the same time, and microservices can process large amounts of data in less time. This enables faster, more efficient work.

Media content

Companies like Netflix and Amazon Prime Video process thousands of API requests daily. Microservice architecture is advantageous for services like OTT platforms that provide users with multi-media content. Microservices will handle many requests for various subdomains worldwide promptly and accurately.

Transactions and invoices

Ideal for applications that process and generate invoices for microservices, high-volume payments, and transactions. An app that fails to process payments can cost a company dearly. Microservices can make performance adjustments more powerful without modifying the application.

How to monitor microservices?

There are many tools to monitor microservice:

  • The Datadog program works well for monitoring, tracing log analytics, alerting, issue discovery, and performance deterioration.
  • NewRelic tool helps in reporting and monitoring for cloud environments.
  • the Splunk tool for log analysis.
  • The AppDynamix utility aids in real-time server performance monitoring.
  • Zabbix tool is exclusively for performance monitoring.

Examples of Microservices Architecture

Magazine Company

  • The publication may have different microservices for various purposes. These microservices include editorial, author, photographer, and legal team microservices, which are available on the executive website portal. Additionally, there are user microservices specifically designed for the newspaper's mobile app.


  • Amazon runs thousands of microservices on shopping cart items such as checkout, checkout, wish lists, and payment gateways.


  • Netflix was the first company to extensively use microservices architecture, handling over 2 billion API edge requests every day.