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Ekanatha
Reddy Urivakili
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C# Interview Guide: CQRS with MediatR — Commands, Queries, Pipeline Behaviours

Q27 — CQRS with MediatR — Commands, Queries, Pipeline Behaviours Level: Senior | Topic: Architecture CQRS in a Nutshell Command Query Responsibility Segregation separates operations that change state (Commands) from oper...

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Ekanatha Reddy
·3 min read·6 Jun 2026

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C# Interview Guide: Clean Architecture — Solution Structure and the Dependency Rule

Q26 — Clean Architecture — Solution Structure, Dependency Rule, Layer Responsibilities Level: Senior | Topic: Architecture The Core Principle — Dependency Rule In Clean Architecture, dependencies point inward only . The ...

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Ekanatha Reddy
3 min6 Jun 2026
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C# Interview Guide: Integration Testing with WebApplicationFactory and Testcontainers

Q25 — Integration Testing with WebApplicationFactory and Testcontainers Level: Senior | Topic: Testing Why Integration Tests? Unit tests verify logic in isolation. Integration tests verify the full ASP.NET Core pipeline ...

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Ekanatha Reddy
3 min6 Jun 2026
0

C# Interview Guide: Unit Testing with xUnit, NSubstitute, and FluentAssertions

Q24 — Unit Testing with xUnit, NSubstitute, FluentAssertions — Full Examples Level: Mid-Level | Topic: Testing The Testing Pyramid A healthy test suite follows the pyramid: ~70% unit tests (milliseconds, no I/O, xUnit + ...

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Ekanatha Reddy
3 min6 Jun 2026
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C# Interview Guide: Secrets Management — User Secrets, Azure Key Vault, Managed Identity

Q23 — Secrets Management — User Secrets, Azure Key Vault, Managed Identity Level: Mid-Level | Topic: Security The Problem Secrets committed to source control are a leading cause of breaches. The correct approach: use dif...

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Ekanatha Reddy
2 min5 Jun 2026
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C# Interview Guide: OWASP Top 10 for .NET APIs — Mitigations and Code

Q22 — OWASP Top 10 — How Each Applies to .NET APIs with Mitigations Level: Senior | Topic: Security The Most Critical Risks A01 — Broken Access Control: Never trust client-sent IDs. Always load the resource then verify o...

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Ekanatha Reddy
3 min5 Jun 2026
0

C# Interview Guide: Rate Limiting in .NET 7+ — Fixed Window, Sliding Window, Token Bucket

Q21 — Rate Limiting in .NET 7+ — Fixed Window, Sliding Window, Token Bucket Level: Senior | Topic: Performance Optimization Why Rate Limiting? Rate limiting protects your API from overload — whether from abusive clients,...

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Ekanatha Reddy
3 min5 Jun 2026
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C# Interview Guide: Span<T>, Memory<T>, and ArrayPool<T> — Zero-Allocation Patterns

Q20 — Span&lt;T&gt;, Memory&lt;T&gt;, and ArrayPool&lt;T&gt; — Zero-Allocation Patterns Level: Senior | Topic: Performance Optimization The Problem: Allocation Pressure In high-throughput .NET code, excessive heap alloca...

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Ekanatha Reddy
3 min5 Jun 2026
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C# Interview Guide: Caching Layers — IMemoryCache, IDistributedCache, HybridCache, Output Cache

Q19 — Caching Layers — IMemoryCache, IDistributedCache, HybridCache, Output Cache Level: Senior | Topic: Performance Optimization Choosing the Right Cache IMemoryCache: In-process, zero serialisation, microsecond latency...

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Ekanatha Reddy
2 min5 Jun 2026