Clean implementation of consistent hashing with virtual nodes for load distribution. Uses bisect for efficient O(log n) server lookup on the hash ring. Self-contained with no external dependencies beyond standard library. Demonstrates proper handling of server addition/removal with minimal key redistribution.

Accurate sliding window rate limiter using deque for O(1) timestamp removal. More precise than counter-based approaches as it tracks individual request timestamps. Clean separation of concerns with minimal state management. Easily adaptable to different window sizes and limits.

Thread-safe token bucket implementation using synchronized methods. Properly calculates token refill based on elapsed time using Instant for accurate time tracking. Demonstrates Java best practices for concurrent access without external locking mechanisms.

Thread-safe round-robin load balancer using AtomicInteger for index management. Avoids race conditions in concurrent request handling. Clean implementation that could be extracted as a utility class for production load balancing scenarios.

Clean token bucket implementation that supports burst traffic by allowing requests up to capacity. Properly calculates token refill based on elapsed time. Demonstrates the classic token bucket algorithm with minimal state and clear logic flow.