TECHNICAL SUPPORT
Published 2026-01-19
Have you ever felt this way? Your application obviously runs very briskly at first, but as more and more functions are added, it is like running with a sandbag on its back, getting slower and slower and more difficult. One day I wanted to change a small function, but it felt like I had to move a huge boulder, and my entire body was affected by just one move. Once deployed, half of the system must be restarted. This feels terrible, right?
It's not that your code is poorly written. Many times, the original simple and clear "overall" architecture can no longer accommodate your complex needs today. It became a bloated, difficult-to-maintain "big ball of mud." At this time, you need to change your thinking and split this large piece of stuff into a set of small, independent, and focused "microservices." And ASP.NET Core is the perfect stage to realize this idea.
Imagine if you ran a restaurant. Initially you are the chef cum cashier cum waiter and have everything under control. But when customer traffic surges, you'll be in a hurry. A smart move would be to have one chef specialize in steaks, another in desserts, and someone at the front desk to focus on reception and cashiering. Everyone has clear responsibilities, works independently, and communicates through simple orders.
Microservices are the embodiment of this "professional division of labor" in the software world. It breaks down a huge single application into a series of small, autonomous services. Each service is only responsible for a clear business (such as user management, order processing, payment gateway), has its own database, and can be developed, deployed and expanded independently. They "talk" to each other through a lightweight HTTP API or message queue.
Why do this in ASP.NET Core?
Because ASP.NET Core is built for modularity and performance. Its lightweight, cross-platform features, as well as built-in dependency injection and powerful configuration system, make it very natural to build and run independent microservices. It's like you have a set of standardized and easy-to-use kitchen utensils, and every professional chef (microservice) can start working efficiently.
It’s an improvement in resilience. In a single application, the collapse of a small, non-core function may cause the entire website to crash. Under the microservice architecture, if the "Recommended Products" service is temporarily suspended, the "Order and Pay" service can still work normally. The loss of user experience is minimized. It's like the pastry chef at a restaurant taking a leave of absence, but the steakhouse and front-of-house service are still there and the restaurant can still operate.
It is the liberation of team speed. Different small teams can be independently responsible for different services and develop them in parallel. Update payment logic? Just deploy payment services without disturbing user services or commodity services. This means faster iteration and more flexible response to market changes.
Furthermore, it is the freedom of technology choice. Each microservice can choose the technology stack that best suits its task. For computationally intensive image processing services, you can use different solutions; for simple data presentation services, keep it light. This kind of freedom is difficult to achieve in a monolithic architecture.
Of course, there is another side to the story. When there are more services, the communication links become more complicated. How do you monitor the health of so many services? A user request runs through multiple services. How to quickly locate a problem if something goes wrong? This introduces new challenges: you need service discovery, configuration centers, distributed tracing and smart gateways. Fortunately, there are mature patterns and tools to deal with these in the ASP.NET Core ecosystem, such as Ocelot as an API gateway, or using Kubernetes for orchestration.
Back to the original question. When your system starts to "huff" and feel rigid and heavy, microservice architecture provides a path to decoupling and evolution. It’s not a silver bullet, but a systematic, thoughtful refactoring designed to build a stronger, more agile whole out of smaller, more focused parts.
It's like transforming a large castle into a complex of exquisite towers with different functions. Each tower is strong and independent, yet connected by clear passages. When a storm comes, it won't collapse completely; when expansion is needed, just a new tower will be built.
Starting this journey with ASP.NET Core means you choose a modern, efficient, and dynamic technology stack as your cornerstone. It won’t make complexity disappear, but it will give you powerful tools and clear paths to navigate it and build sustainable systems. When every service can run briskly, your entire business will regain its due rhythm and power.
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Update Time：2026-01-19
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