Top-Rated .NET Developer Resume Examples for Illinois

In my previous role, I worked on migrating a legacy ASP.NET MVC application to ASP.NET Core. The biggest challenge was refactoring the large codebase while minimizing downtime. I addressed this by using the Strangler Fig pattern, incrementally rewriting components as microservices. I leveraged Azure DevOps for continuous integration and deployment, and we used feature flags to gradually roll out the new services, monitoring performance closely. This approach allowed us to modernize the application without disrupting the existing users.

The `==` operator checks for reference equality by default, meaning it compares if two objects point to the same memory location. However, for value types like `int` or `string`, it checks for value equality. The `.Equals()` method, on the other hand, is designed to check for value equality. The default implementation of `.Equals()` also checks for reference equality, but it can be overridden in custom classes to define custom equality logic based on the object's properties.

I'd implement caching using either in-memory caching or distributed caching. For in-memory caching, I'd use the `IMemoryCache` interface provided by ASP.NET Core, setting expiration policies for cached data. For distributed caching, I'd use Redis or Memcached, configuring the application to store and retrieve cached data from these external stores. I would consider cache invalidation strategies to ensure data consistency.

I would assess the project's specific needs. Entity Framework Core provides an ORM that simplifies database interactions with features like LINQ and automatic change tracking, suitable for projects where development speed and maintainability are prioritized. Dapper, a micro-ORM, offers better performance and more control over SQL queries, ideal for performance-critical applications. I'd consider factors like team familiarity, project complexity, and performance requirements to make an informed decision.

SOLID stands for Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion. I apply these principles by designing classes with single responsibilities, using interfaces to allow for extension without modification, ensuring derived classes can substitute their base classes, creating specific interfaces instead of large ones, and using dependency injection to decouple components. This leads to more maintainable, testable, and flexible code.

I once encountered a memory leak in an ASP.NET Core application that caused performance degradation over time. I started by using profiling tools like dotMemory to identify the objects causing the leak. I then analyzed the code paths that created and disposed of these objects, finding that a singleton service was holding onto references to short-lived objects. By properly disposing of these objects and adjusting the service's lifecycle, I was able to eliminate the memory leak and restore the application's performance.