.NET Learning Notes: EFCore circular reference issue

Let's consider following situation:

public class Category {
    List<TaskItem> tasks = new List<TaskItem>();
}
public class TaskItem {
    public Category category;
}

**If we use dbContext.Category.Include(c => c.tasks).....
It will cause circular reference issue, EF Core will load Category then include its tasks. Each TaskItem contains a reference to its Category, then that Category includes its Tasks again.....
This Creates: performances issues, Stack overflow errors, problems when serializing to JSON.

1.Use DTO(Data Transfer Objects)

var categories = context.Categories
    .Where(c => !c.IsDeleted)
    .Select(c => new {
        c.Id,
        c.Name,
        Tasks = c.Tasks
            .Where(t => !t.IsDeleted)
            .Select(t => new {
                t.Id,
                t.Title,
                t.IsCompleted
            }).ToList()
    })
    .ToList();

2.Use [JsonIgnore]

[JsonIgnore]
public Category Category { get; set; }