{ "item_title" : "Building Modular APIs with ASP.NET Core", "item_author" : [" Riley Frost "], "item_description" : "Build ASP.NET Core APIs that stay maintainable as your application grows.Business applications rarely become difficult because they lack features. They become difficult because boundaries disappear. Database access spreads across the codebase, business rules are duplicated, modules become tightly coupled, and even a small change can affect parts of the system nobody expected.Building Modular APIs with ASP.NET Core shows you how to solve that problem with a practical, production-oriented modular architecture.Using .NET 10 LTS, ASP.NET Core 10, C# 14, Entity Framework Core 10, and PostgreSQL, you will build AtlasOps, a realistic business application composed of Customers, Work Orders, Billing, and Identity modules. Instead of treating modularity as an architectural diagram, the book shows how to enforce ownership and boundaries directly in application code, persistence, contracts, tests, and production operations.You will learn how to: Design a modular monolith around real business capabilitiesKeep module dependencies explicit and prevent architectural driftStructure ASP.NET Core solutions for clear ownership and maintainabilityGive modules independent EF Core DbContexts, schemas, and migrationsBuild practical Customers, Work Orders, Billing, and Identity modulesCommunicate between modules using contracts, integration events, and the transactional outboxImplement authentication, roles, claims, permissions, and resource-level authorizationDesign stable API contracts with validation, Problem Details, versioning, and OpenAPIHandle transactions, optimistic concurrency, retries, and idempotent commands safelyTest domain behavior, PostgreSQL persistence, endpoints, and architectural boundariesAdd structured logging, OpenTelemetry, health checks, metrics, and resilienceOptimize EF Core queries, PostgreSQL indexes, caching, and API performanceContainerize and deploy the application with production-focused CI/CD practicesRecognize when a module genuinely needs to become an independent serviceRather than pushing every growing application toward microservices, this book demonstrates how a well-designed modular monolith can preserve simple deployment while providing strong boundaries, reliable data ownership, testability, and room for future evolution.You will also learn how to identify the real signals for service extraction-such as independent scaling, deployment cadence, data ownership, and team autonomy-without introducing distributed-system complexity before it is justified.Building Modular APIs with ASP.NET Core is designed for C# and ASP.NET Core developers, backend engineers, software architects, and development teams who want to build business APIs that remain understandable, testable, and production-ready as they grow.If you want the maintainability benefits associated with well-designed distributed systems without prematurely paying the operational cost of microservices, this book provides a practical path forward.", "item_img_path" : "https://covers4.booksamillion.com/covers/bam/9/79/817/875/9798178754627_b.jpg", "price_data" : { "retail_price" : "22.99", "online_price" : "22.99", "our_price" : "22.99", "club_price" : "22.99", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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