💜
Core C#
Language fundamentals, LINQ, async/await, records
🏛️
SOLID Principles
SRP, OCP, LSP, ISP, DIP with practical examples
🎨
Design Patterns
Creational, structural, behavioral patterns
🏗️
Clean Architecture
Layers, boundaries, dependency rules
🧭
Domain-Driven Design
Strategic + tactical DDD: bounded contexts, aggregates, value objects, ACL
🔒
Security
OWASP, authentication, secrets management
🧪
TDD & Testing
Unit testing, mocking, test strategies
📦
Collections
Lists, dictionaries, LINQ, enumerables
⚡
Performance
Big-O, memory allocation, optimization
⚠️
Error Handling
Exceptions, Result types, defensive programming
📝
Logging
Structured logging, correlation, observability
🏢
Architecture
System design, solution structure, patterns
🔄
AutoMapper
Object mapping, profiles, projections
✅
FluentValidation
Input validation, rules, custom validators
♻️
DRY Principle
Don't Repeat Yourself patterns
🪞
Reflection
Runtime type inspection, dynamic code
📈
Observability
OpenTelemetry, Grafana, metrics, tracing, logging
🔀
Coroutines
Async iterators, IAsyncEnumerable, yield return, channels
📡
SignalR
Real-time communication, WebSockets, hubs, scaling
🛢️
Databases
Relational basics, keys, ACID, normalization, indexing, query plans, SARGability, isolation, optimization
🗄️
Data Access
EF Core, querying, N+1, migrations, transactions, performance
🧱
Redis
Caching patterns, TTL/eviction, distributed locks, persistence
🐰
RabbitMQ
AMQP, exchanges, acks, dead-lettering, MassTransit, outbox