Common Runtime Errors

About

This section captures frequently encountered runtime failures that occur in production systems due to resource exhaustion, misconfiguration, or design oversights. It focuses on critical low-level issues such as out-of-memory errors, native thread limits, file descriptor exhaustion, garbage collection stalls, and CPU saturation.

Importance in System Design

• Reveals the hidden costs of poor design choices: Using unbounded queues or thread pools may work in test environments but lead to production crashes.

• Promotes production-aware architecture: Understanding runtime errors helps you design systems that stay healthy under stress.

• Links theory to practice: Shows how architectural patterns (e.g., concurrency, async processing) translate into real-world risks.

• Strengthens operational readiness: Anticipating common runtime issues allows better defaults, safeguards, and observability from the beginning.

• Supports capacity planning and resource tuning: Helps determine sensible limits for threads, memory, and CPU in design and deployment configurations.