Go handles memory management differently from languages like C or C++ by utilizing a garbage collector. The garbage collector automatically identifies and reclaims memory that is no longer in use, relieving developers from the manual memory management burdens seen in C or C++. This approach helps prevent common memory-related errors such as buffer overflows and memory leaks. It improves developer productivity and code safety.

Go enforces package-level encapsulation by convention. Variables and functions with uppercase initial letters are considered public and can be accessed from outside the package, while those with lowercase initial letters are considered private and can only be accessed from within the same package. This convention helps maintain code organization and prevents unintended access to package internals, promoting encapsulation and code stability.

Common build constraints in Go often include the use of -tags to specify build tags. Build tags allow conditional compilation based on the tags provided. This is particularly useful when you need to build different versions of your code for different environments or platforms. It enables you to include or exclude specific sections of code, dependencies, or configurations during the build process, helping you maintain platform-specific or environment-specific codebases efficiently.

To follow the MVC design pattern in an Echo application, you should create separate packages for models (data structures), views (templates or responses), and controllers (handling requests and responses). This separation of concerns helps maintain a clean and organized codebase, making it easier to manage and scale your application.

Go's garbage collector uses a mark-and-sweep algorithm. It starts by marking all reachable objects and then sweeping away the unmarked, unreferenced objects. Some key characteristics include concurrency (it can run concurrently with the application), low latency (it minimizes stop-the-world pauses), and generational collection (it separates objects into young and old generations). Go's garbage collector helps manage memory automatically, reducing the risk of memory leaks and manual memory management.

To specify a specific version of a dependency using Go Modules, you use the 'require' directive in the go.mod file. You list the module path and the desired version, ensuring that the version adheres to semantic versioning (SemVer). This allows Go Modules to fetch the correct version of the dependency when you build your project. This precise versioning is essential for ensuring consistency and predictability in your project's dependencies.

The Attach method in Entity Framework Core is primarily used for tracking changes made to an entity. When you attach an entity, EF Core starts tracking it, and any changes made to that entity will be detected and persisted when you call SaveChanges. This is especially useful when you want to work with entities that have been detached from the context.

The most probable cause of a 404 error when accessing an action method is incorrect route configuration. Ensure that the route for the "Details" action method in the "Products" controller is properly configured to accept the required parameters, such as the product ID (e.g., "{controller}/{action}/{id}").

To create a textbox for user input in a Razor view, you would use the asp-textbox tag helper. This helper generates the necessary HTML input element, and you can specify its attributes and bindings using the asp-for attribute. It's a handy tool for creating forms in ASP.NET Core views.

ASP.NET Core is a successor to the ASP.NET MVC framework. While ASP.NET Web Forms and Classic ASP were earlier web development technologies from Microsoft, ASP.NET Core represents a more modern and flexible approach to web development.