Hard20m

Prompt Injection in Support AI

AI EngineeringSystem Design
Hard20m

RabbitMQ: Duplicate Payment Jobs

Distributed SystemsRabbitMQ
Hard20m

RabbitMQ: Delayed Retry Design

Distributed SystemsRabbitMQ
Hard20m

RabbitMQ: Routing Order Events

Distributed SystemsRabbitMQ
Hard20m

RAG: Catch Retrieval Regressions

AI EngineeringSystem Design
Hard20m

RAG: Fresh Sources and Citations

AI EngineeringSystem Design
Hard20m

RAG: Hybrid Retrieval Trade-offs

AI EngineeringSystem Design
Hard20m

Reliable Structured LLM Output

AI EngineeringSystem Design
Hard20m

Vector Search: Chunking a Manual

AI EngineeringSystem Design
Hard20m

Vector Search: Re-embed Safely

AI EngineeringSystem Design
Hard20m

Vector Search: Tenant Isolation

AI EngineeringSystem Design
Hard20m

Cache invalidation and consistency

Distributed SystemsSystem Design
Hard20m

Cache metrics and capacity planning

Distributed SystemsSystem Design
Hard20m

Preventing cache stampedes

Distributed SystemsSystem Design
Hard20m

Consistent hashing for cache clusters

Distributed SystemsSystem Design