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تحميل Zip جاري التحميل... name aspnet-core-advanced version 2.0.0 description Master advanced ASP.NET Core development including Entity Framework Core, authentication, testing, and enterprise patterns for production applications. sasmp_version 1.3.0 bonded_agent aspnet-core-architecture bond_type PRIMARY_BOND skill_type atomic responsibility single parameters {"ef_version":{"type":"string","required":false,"default":"9.0","validation":{"allowed_values":["6.0","7.0","8.0","9.0"]}},"auth_type":{"type":"string","required":false,"default":"jwt","validation":{"allowed_values":["jwt","cookie","oauth2","apikey","certificate"]}},"cache_provider":{"type":"string","required":false,"default":"memory","validation":{"allowed_values":["memory","redis","sqlserver","hybrid"]}}} retry_config {"enabled":true,"max_attempts":3,"backoff_type":"exponential","initial_delay_ms":1000,"max_delay_ms":15000,"jitter":true,"retryable_errors":["DATABASE_TIMEOUT","DEADLOCK","CONNECTION_FAILURE"]} observability {"logging":{"enabled":true,"level":"Information","include_sql_queries":true,"sensitive_fields":["password","token","secret","connectionString"]},"metrics":{"enabled":true,"namespace":"skill.aspnetcore.advanced","dimensions":["operation","entity_type","cache_hit"]},"tracing":{"enabled":true,"span_name":"aspnetcore-advanced","include_db_spans":true}} test_templates {"framework":"xunit","mocking":"moq","assertions":"fluent_assertions","coverage_target":85,"database_strategy":"in_memory"}
ASP.NET Core Advanced Development
Skill Overview
Production-grade advanced skill for enterprise ASP.NET Core applications. Covers Entity Framework Core 8/9, authentication, advanced testing, caching, and design patterns with comprehensive observability.
Advanced Skills
Entity Framework Core 8/9
core_features:
dbcontext:
- Lifetime management (scoped)
- Connection pooling
- Query tracking behavior
- Interceptors and events
- Compiled models
mapping:
fluent_api:
- Entity configuration
- Relationships (HasOne, HasMany)
- Complex types (.NET 8 +)
- JSON columns
- Owned types
conventions:
- Table naming
- Key naming
- Property discovery
queries:
linq:
-
Projection
(Select)
-
Filtering
(Where)
-
Sorting
(OrderBy)
-
Grouping
(GroupBy)
-
Joins
(Include,
ThenInclude)
raw_sql:
-
FromSqlRaw
-
FromSqlInterpolated
-
ExecuteSql
performance:
optimization:
-
No
-tracking
queries
-
Split
queries
(AsSplitQuery)
-
Compiled
queries
-
Bulk
operations
-
Connection
resiliency
monitoring:
-
Query
logging
-
Execution
plan
analysis
-
Missing
index
detection
new_in_ef9:
-
LINQ
improvements
-
Better
JSON
column
support
-
Improved
migrations
-
ExecuteUpdate/Delete
enhancements
Authentication & Authorization authentication_schemes:
jwt_bearer:
setup:
- Configure token validation
- Set issuer and audience
- Configure signing key
best_practices:
- Short token expiry
- Refresh token rotation
- Secure key storage
cookie:
setup:
- Configure cookie options
- Set secure and httpOnly
- Configure SameSite policy
use_cases:
- Server-rendered apps
- MVC applications
oauth2_openid:
providers:
- Microsoft Identity
- Google
- GitHub
- Custom OIDC
flows:
- Authorization code
- Client credentials
- Device code
authorization:
role_based:
- [Authorize(Roles = "Admin" ) ]
- User.IsInRole("Admin")
claims_based:
- [Authorize(Policy = "RequireClaim" ) ]
- RequireClaim("permission", "read" )
policy_based:
- Custom requirements
- Authorization handlers
- Resource-based
resource_based:
- IAuthorizationService
- Document-level permissions
Testing Strategies unit_testing:
frameworks:
- xUnit (recommended)
- NUnit
- MSTest
patterns:
- Arrange-Act-Assert (AAA)
- Given-When-Then (BDD)
mocking:
- Moq
- NSubstitute
- FakeItEasy
integration_testing:
web_application_factory:
- In-memory test server
- Custom configuration
- Service replacement
database:
- In-memory provider
- TestContainers
- Respawn for cleanup
test_data:
builders:
- Fluent builders
- Object mothers
- AutoFixture
fixtures:
- Shared context
- Disposable resources
coverage:
tools:
- Coverlet
- ReportGenerator
targets:
- 80 % line coverage
- 70 % branch coverage
Caching Strategies in_memory:
IMemoryCache:
- Local cache
- Fast access
- Limited to single instance
best_for:
- Session data
- Configuration
- Frequently accessed data
distributed:
IDistributedCache:
providers:
- Redis
- SQL Server
- NCache
features:
- Multi-instance support
- Persistence
- TTL policies
hybrid_cache:
features:
- Two-tier caching
- Automatic stampede protection
- Tag-based invalidation
configuration:
- L1 (memory)
- L2 (distributed)
output_caching:
attributes:
- [OutputCache(Duration = 60 ) ]
- [OutputCache(VaryByQuery = "id" ) ]
policies:
- Custom cache policies
- Cache profiles
response_caching:
headers:
- Cache-Control
- ETag
- Vary
Performance Optimization async_patterns:
best_practices:
- Async all the way
- Avoid .Result and .Wait()
- Use CancellationToken
- ConfigureAwait(false) in libraries
common_issues:
- Deadlocks
- Thread starvation
- Excessive allocations
memory_optimization:
techniques:
- Object pooling
- Span<T> and Memory<T>
- ArrayPool<T>
- String interning
tools:
- dotnet-counters
- dotnet-trace
- Memory profilers
database_optimization:
query_level:
- Projection (select only needed)
- Pagination
- Indexing
- Query splitting
connection_level:
- Connection pooling
- Connection resiliency
- Read replicas
Code Examples
Entity Framework Core Configuration
public class ApplicationDbContext : DbContext
{
public ApplicationDbContext (DbContextOptions<ApplicationDbContext> options )
: base (options )public DbSet<Product> Products => Set<Product>();
public DbSet<Category> Categories => Set<Category>();
public DbSet<Order> Orders => Set<Order>();
protected override void OnModelCreating (ModelBuilder modelBuilder )typeof (ApplicationDbContext).Assembly);
modelBuilder.Entity<Product>()
.HasQueryFilter(p => !p.IsDeleted);
modelBuilder.Entity<Order>()
.OwnsOne(o => o.ShippingAddress, builder =>
{
builder.ToJson();
});
}
protected override void ConfigureConventions (
ModelConfigurationBuilder configurationBuilder )decimal >()
.HavePrecision(18 , 2 );
configurationBuilder.Properties<string >()
.HaveMaxLength(500 );
}
}
public class ProductConfiguration : IEntityTypeConfiguration <Product >
{
public void Configure (EntityTypeBuilder<Product> builder )"Products" );
builder.HasKey(p => p.Id);
builder.Property(p => p.Name)
.HasMaxLength(200 )
.IsRequired();
builder.Property(p => p.Price)
.HasPrecision(18 , 2 );
builder.HasOne(p => p.Category)
.WithMany(c => c.Products)
.HasForeignKey(p => p.CategoryId)
.OnDelete(DeleteBehavior.Restrict);
builder.HasIndex(p => p.Sku)
.IsUnique();
builder.HasIndex(p => new { p.CategoryId, p.Name });
}
}
builder.Services.AddDbContext<ApplicationDbContext>(options =>
{
options.UseSqlServer(
builder.Configuration.GetConnectionString("Default" ),
sqlOptions =>
{
sqlOptions.EnableRetryOnFailure(
maxRetryCount: 3 ,
maxRetryDelay: TimeSpan.FromSeconds(30 ),
errorNumbersToAdd: null );
sqlOptions.CommandTimeout(30 );
sqlOptions.UseQuerySplittingBehavior(QuerySplittingBehavior.SplitQuery);
});
if (!builder.Environment.IsDevelopment())
{
options.UseQueryTrackingBehavior(QueryTrackingBehavior.NoTrackingWithIdentityResolution);
}
});
JWT Authentication Setup
builder.Services.AddAuthentication(options =>
{
options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
})
.AddJwtBearer(options =>
{
options.TokenValidationParameters = new TokenValidationParameters
{
ValidateIssuer = true ,
ValidateAudience = true ,
ValidateLifetime = true ,
ValidateIssuerSigningKey = true ,
ValidIssuer = builder.Configuration["Jwt:Issuer" ],
ValidAudience = builder.Configuration["Jwt:Audience" ],
IssuerSigningKey = new SymmetricSecurityKey(
Encoding.UTF8.GetBytes(builder.Configuration["Jwt:Key" ]!)),
ClockSkew = TimeSpan.FromMinutes(1 )
};
options.Events = new JwtBearerEvents
{
OnAuthenticationFailed = context =>
{
if (context.Exception is SecurityTokenExpiredException)
{
context.Response.Headers.Append(
"Token-Expired" , "true" );
}
return Task.CompletedTask;
}
};
});
public class TokenService : ITokenService
{
private readonly IConfiguration _configuration;
public TokenService (IConfiguration configuration )public string GenerateToken (User user, IEnumerable<string > roles )var claims = new List<Claim>
{
new (ClaimTypes.NameIdentifier, user.Id.ToString()),
new (ClaimTypes.Email, user.Email),
new (ClaimTypes.Name, user.UserName),
new (JwtRegisteredClaimNames.Jti, Guid.NewGuid().ToString())
};
claims.AddRange(roles.Select(role => new Claim(ClaimTypes.Role, role)));
var key = new SymmetricSecurityKey(
Encoding.UTF8.GetBytes(_configuration["Jwt:Key" ]!));
var credentials = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);
var token = new JwtSecurityToken(
issuer: _configuration["Jwt:Issuer" ],
audience: _configuration["Jwt:Audience" ],
claims: claims,
expires: DateTime.UtcNow.AddHours(1 ),
signingCredentials: credentials);
return new JwtSecurityTokenHandler().WriteToken(token);
}
}
Repository Pattern with Unit of Work
public interface IRepository <T > where T : Entity
{
Task<T?> GetByIdAsync(int id, CancellationToken ct = default );
Task<IReadOnlyList<T>> GetAllAsync(CancellationToken ct = default );
Task<IReadOnlyList<T>> GetAsync(
Expression<Func<T, bool >> predicate,
CancellationToken ct = default );
Task<T> AddAsync (T entity, CancellationToken ct = default ) ;
void Update (T entity )void Delete (T entity )public class Repository <T > : IRepository <T > where T : Entity
{
protected readonly ApplicationDbContext _context;
protected readonly DbSet<T> _dbSet;
public Repository (ApplicationDbContext context )public virtual async Task<T?> GetByIdAsync(int id, CancellationToken ct = default )
{
return await _dbSet.FindAsync(new object [] { id }, ct);
}
public virtual async Task<IReadOnlyList<T>> GetAllAsync(CancellationToken ct = default )
{
return await _dbSet.ToListAsync(ct);
}
public virtual async Task<IReadOnlyList<T>> GetAsync(
Expression<Func<T, bool >> predicate,
CancellationToken ct = default )
{
return await _dbSet.Where(predicate).ToListAsync(ct);
}
public virtual async Task<T> AddAsync (T entity, CancellationToken ct = default )await _dbSet.AddAsync(entity, ct);
return entity;
}
public virtual void Update (T entity )public virtual void Delete (T entity )if (_context.Entry(entity).State == EntityState.Detached)
{
_dbSet.Attach(entity);
}
_dbSet.Remove(entity);
}
}
public interface IUnitOfWork : IDisposable
{
IRepository<Product> Products { get ; }
IRepository<Category> Categories { get ; }
IRepository<Order> Orders { get ; }
Task<int > SaveChangesAsync (CancellationToken ct = default ) ;
}
public class UnitOfWork : IUnitOfWork
{
private readonly ApplicationDbContext _context;
private IRepository<Product>? _products;
private IRepository<Category>? _categories;
private IRepository<Order>? _orders;
public UnitOfWork (ApplicationDbContext context )public IRepository<Product> Products =>
_products ??= new Repository<Product>(_context);
public IRepository<Category> Categories =>
_categories ??= new Repository<Category>(_context);
public IRepository<Order> Orders =>
_orders ??= new Repository<Order>(_context);
public async Task<int > SaveChangesAsync (CancellationToken ct = default )return await _context.SaveChangesAsync(ct);
}
public void Dispose ()
HybridCache Implementation (.NET 9)
builder.Services.AddHybridCache(options =>
{
options.MaximumPayloadBytes = 1024 * 1024 ;
options.MaximumKeyLength = 512 ;
options.DefaultEntryOptions = new HybridCacheEntryOptions
{
Expiration = TimeSpan.FromMinutes(5 ),
LocalCacheExpiration = TimeSpan.FromMinutes(1 )
};
});
builder.Services.AddStackExchangeRedisCache(options =>
{
options.Configuration = builder.Configuration.GetConnectionString("Redis" );
});
public class ProductService : IProductService
{
private readonly HybridCache _cache;
private readonly ApplicationDbContext _context;
private readonly ILogger<ProductService> _logger;
public ProductService (
HybridCache cache,
ApplicationDbContext context,
ILogger<ProductService> logger )public async Task<ProductDto?> GetByIdAsync(int id, CancellationToken ct)
{
var cacheKey = $"product:{id} " ;
var product = await _cache.GetOrCreateAsync(
cacheKey,
async token =>
{
_logger.LogDebug("Cache miss for product {ProductId}" , id);
return await _context.Products
.AsNoTracking()
.Where(p => p.Id == id)
.Select(p => new ProductDto
{
Id = p.Id,
Name = p.Name,
Price = p.Price,
CategoryName = p.Category.Name
})
.FirstOrDefaultAsync(token);
},
new HybridCacheEntryOptions
{
Expiration = TimeSpan.FromMinutes(10 ),
LocalCacheExpiration = TimeSpan.FromMinutes(2 )
},
cancellationToken: ct);
return product;
}
public async Task InvalidateCacheAsync (int productId, CancellationToken ctawait _cache.RemoveAsync($"product:{productId} " , ct);
}
}
Integration Testing with WebApplicationFactory public class ProductsApiTests : IClassFixture <WebApplicationFactory <Program >>, IAsyncLifetime
{
private readonly WebApplicationFactory<Program> _factory;
private readonly HttpClient _client;
private AsyncServiceScope _scope;
private ApplicationDbContext _dbContext = null !;
public ProductsApiTests (WebApplicationFactory<Program> factory )var descriptor = services.SingleOrDefault(
d => d.ServiceType == typeof (DbContextOptions<ApplicationDbContext>));
if (descriptor != null )
services.Remove(descriptor);
services.AddDbContext<ApplicationDbContext>(options =>
{
options.UseInMemoryDatabase("TestDb" );
});
services.AddAuthentication("Test" )
.AddScheme<AuthenticationSchemeOptions, TestAuthHandler>(
"Test" , options => { });
});
});
_client = _factory.CreateClient();
_client.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue("Test" );
}
public async Task InitializeAsync ()await _dbContext.Database.EnsureCreatedAsync();
_dbContext.Products.AddRange(
new Product { Id = 1 , Name = "Test Product 1" , Price = 10.00 m },
new Product { Id = 2 , Name = "Test Product 2" , Price = 20.00 m }
);
await _dbContext.SaveChangesAsync();
}
public async Task DisposeAsync ()await _dbContext.Database.EnsureDeletedAsync();
await _scope.DisposeAsync();
}
[Fact ]
public async Task GetProducts_ReturnsAllProducts ()var response = await _client.GetAsync("/api/products" );
response.StatusCode.Should().Be(HttpStatusCode.OK);
var products = await response.Content.ReadFromJsonAsync<List<ProductDto>>();
products.Should().HaveCount(2 );
}
[Fact ]
public async Task GetProduct_WhenExists_ReturnsProduct ()var response = await _client.GetAsync("/api/products/1" );
response.StatusCode.Should().Be(HttpStatusCode.OK);
var product = await response.Content.ReadFromJsonAsync<ProductDto>();
product!.Name.Should().Be("Test Product 1" );
}
[Fact ]
public async Task CreateProduct_WithValidData_ReturnsCreated ()var request = new CreateProductRequest
{
Name = "New Product" ,
Price = 99.99 m
};
var response = await _client.PostAsJsonAsync("/api/products" , request);
response.StatusCode.Should().Be(HttpStatusCode.Created);
response.Headers.Location.Should().NotBeNull();
}
}
public class TestAuthHandler : AuthenticationHandler <AuthenticationSchemeOptions >
{
public TestAuthHandler (
IOptionsMonitor<AuthenticationSchemeOptions> options,
ILoggerFactory logger,
UrlEncoder encoder )
: base (options, logger, encoder )protected override Task<AuthenticateResult> HandleAuthenticateAsync ()var claims = new []
{
new Claim(ClaimTypes.NameIdentifier, "test-user-id" ),
new Claim(ClaimTypes.Email, "test@example.com" ),
new Claim(ClaimTypes.Role, "Admin" )
};
var identity = new ClaimsIdentity(claims, "Test" );
var principal = new ClaimsPrincipal(identity);
var ticket = new AuthenticationTicket(principal, "Test" );
return Task.FromResult(AuthenticateResult.Success(ticket));
}
}
Troubleshooting Guide
Common Issues Issue Symptoms Resolution N+1 Query Problem Excessive DB calls Use .Include() or projection Connection Pool Exhaustion Timeouts Use using, check connection lifetime Deadlocks Request hangs Use async, check transaction isolation Token Validation Fails 401 Unauthorized Check clock skew, issuer, audience Cache Stampede All requests hit DB Use HybridCache or distributed locking Memory Leaks Growing memory Check IDisposable, DI lifetimes
Debug Checklist step_1_ef_core:
- Enable query logging
- Check execution plans
- Verify indexes
- Monitor connection count
step_2_authentication:
- Validate token format
- Check signing key
- Verify claims
- Inspect authentication events
step_3_performance:
- Profile with Application Insights
- Check async patterns
- Review caching strategy
- Analyze memory allocations
step_4_testing:
- Verify test isolation
- Check service mocking
- Review database cleanup
- Inspect test authentication
Assessment Criteria
References 