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- PDFFree
C# Behavior Testing and Message Contracts Companion
Derive discount boundary cases, test public behavior, and inspect real JSON contracts with complete C# programs and a linked semantic harness. Includes worked exercises and clear limits on what local passing tests establish.
12 pages · 86 KB · Testing and Production Engineering
- PDFFree
ASP.NET Core Validation and Problem Details Companion
Build an order response boundary with manual validation, safe Problem Details and explicit state transitions. Complete C# programs and a linked harness execute real ASP.NET Core result objects while clearly separating response checks from untested hosting and routing.
17 pages · 97 KB · ASP.NET Core
- PDFFree
C# Authorization, Configuration and Safe Delivery Companion
Exercise resource authorization, startup validation and separate health groups with complete C# programs and synthetic fixtures. Worked rollout and retry cases explain compatibility, recovery choices and the limits of local framework checks.
17 pages · 97 KB · ASP.NET Core
- PDFFree
C# First Program, Build and Run Companion
Build and run a complete C# invoice calculator with exact project files, culture-safe input and output, error handling, and eight executable checks. Includes worked transcripts and reproducible .NET 10 exercises.
18 pages · 95 KB · C# Language
- PDFFree
C# Console Design and Testing Companion
Build a three-project C# invoice application with a thin console boundary, reusable calculation library, and a standalone test harness. Work through parsing, rounding, validation, overflow, and a deliberate test failure with exact .NET 10 examples.
15 pages · 76 KB · C# Language
- PDFFree
C# Compiler Diagnostics and Build Confidence Companion
Diagnose and repair syntax, type, and nullable-reference problems with complete .NET 10 projects. Compare warning policies, inspect runtime validation, and check exact output streams and exit codes using worked compiler and port-validation examples.
16 pages · 92 KB · C# Language
- PDFFull Access
ASP.NET Core Cache Correctness Lab Companion
A worked .NET 10 lab on tenant-safe keys, expiration and stale fills, and bounded concurrent cache misses. Includes complete projects, deterministic checks, expected outputs, and applied explanations for the Cache Correctness course.
40 pages · 147 KB · Data Access in .NET
- PDFFree
OAuth, OIDC, JWT and Cookie Security: A .NET Interview Decision Sheet
A nine-page ASP.NET Core security decision guide covering client and flow selection, JWT validation, cookie and browser threats, resource authorization, rotation and ten interview prompts.
9 pages · 99 KB · ASP.NET Core
- PDFFree
Strategy or State? Interview Workbook
A free two-page worksheet with six design scenarios and worked answers on pricing, state transitions, rounding, concurrency and idempotency.
2 pages · 5 KB · Architecture and Design in .NET
- PDFFree
Production-Grade .NET Backend Interview Playbook
A professionally designed seven-page field guide covering DI lifetimes, async cancellation, EF Core diagnosis, idempotency, retries, transaction boundaries, and 16 senior interview scenarios with answers.
7 pages · 35 KB · Testing and Production Engineering
- PDFFull Access
ASP.NET Core Integration Testing Workbook
Seven-page workbook with HTTP contract scenarios, database isolation guidance, tenant-denial tests and a release-readiness rubric.
7 pages · 96 KB · Testing and Production Engineering
- PDFFree
Observer or Mediator? Design Decisions Workbook
Free two-page PDF with six original open-ended design scenarios and reasoned answers, plus a 24-question online companion covering Observer notifications and Mediator workflow recovery.
2 pages · 6 KB · Architecture and Design in .NET