Comprehensive guide to the Bulkhead pattern — Thread Pool vs Semaphore isolation internals, Resilience4j configuration, pool sizing heuristics, integration with Circuit Breaker and Rate Limiter, observability, and production failure modes.
Deep-dive into the Circuit Breaker pattern — state machine internals, sliding window mechanics, Resilience4j configuration, bulkhead integration, fallback strategies, observability, and production failure modes for senior Spring Boot engineers.
Deep dive into Kafka consumer lag — offset mechanics, lag calculation, root cause diagnosis, scaling strategies, and non-blocking retry topics (DLQ, multi-tier backoff, 2-phase consumer commits).
Comprehensive guide to microservices design patterns including API Gateway, Circuit Breaker, Service Mesh, Sidecar, Strangler Fig, Bulkhead, and service discovery in Spring Cloud.
Senior analysis of landmark production outages and reliability architectures — Facebook 2021 BGP/DNS global collapse, AWS Kinesis 2020 OS thread exhaustion, Stripe Idempotency-Key state machine, Discord Go to Rust GC tail latency rewrite, and Graceful Degradation tiers.
Comprehensive guide to the Retry pattern in microservices — transient vs. persistent errors, exponential backoff, jitter algorithms, idempotency, Resilience4j, distributed retry coordination, and integration with Circuit Breaker and Bulkhead.
