System Design · QuestionForge

Questions with System Design variants (52)

Cache warming and prefetching

Caching Strategies

GraphQL API Design

JWS vs JWE

Load Balancing Basics

OpenID Connect vs OAuth 2.0

OWASP Top 10:2025

REST API Design

REST API Versioning

Sessions vs. JWT

Agent: Debug a Bad Outcome

Agent Planning vs Workflows

Agent: Recover from Tool Failure

Cache invalidation and consistency

Cache metrics and capacity planning

Preventing cache stampedes

Optimistic vs Pessimistic Locking

Consistent hashing for cache clusters

CQRS Projection Consistency

CQRS Read and Write Models

Sharding vs Partitioning

Event-Driven Architecture

Event Processing Guarantees

GraphQL Schema Evolution

gRPC Deadlines and Retries

gRPC Service Communication

JWT expiration and revocation

Secure JWT validation

MCP: Evolving a Tool Contract

MCP: Tool Permission Boundaries

MCP: Untrusted Tool Output

Microservice Boundaries

Microservices Saga Pattern

Mutual TLS and service identity

OAuth 2.0 authorization code with PKCE

OAuth client credentials, scopes, audience

OIDC discovery and JWKS

OIDC ID Token validation

Preventing broken access control

Preventing injection attacks

Prompt Changes Without Regressions

Prompt Injection in Support AI

RAG: Catch Retrieval Regressions

RAG: Fresh Sources and Citations

RAG: Hybrid Retrieval Trade-offs

Reliable Structured LLM Output

TLS certificates and PKI

TLS handshake and HTTPS

Vector Search: Chunking a Manual

Vector Search: Re-embed Safely

Vector Search: Tenant Isolation

OAuth token exchange and delegation