Data Consistency & Transactions
Full-spectrum guide to distributed consistency models — from Linearizability to Eventual Consistency, Session Guarantees (Read-Your-Writes, Monotonic Reads), causal vs data-centric lenses, consistency anomalies with real production bugs, S3 case study, and per-operation decision matrix. Covers ACID, BASE, CAP, PACELC, and advanced internals.
Data-Driven vs Event-Driven Architecture: Deep Dive & Decision Framework
Comprehensive senior-principal architectural comparison of Data-Driven Architecture (DDA) and Event-Driven Architecture (EDA). Explores state vs stream paradigms, ACID vs eventual consistency, temporal coupling, polling tax, dual-write prevention with Transactional Outbox and CDC, and a battle-tested decision framework for production systems.
Distributed Transactions: 2PC vs. Saga Pattern
Master guide to distributed transactions in microservices — Two-Phase Commit (2PC), Saga Pattern (Choreography vs. Orchestration), Transactional Outbox + CDC, and NewSQL architectures.
Saga Pattern (Distributed Workflows)
A comprehensive guide to the Saga Pattern — from core concepts for beginners to choreography vs orchestration internals, state machine design, idempotency, compensating transactions, temporal coupling, failure taxonomy, and production observability for senior engineers.
Transactional Outbox Pattern
A complete guide to the Transactional Outbox Pattern — from the Dual-Write problem for beginners to CDC vs polling internals, at-least-once guarantees, ordering semantics, and production monitoring for senior engineers.