6 docs tagged with "cqrs"

Comprehensive guide on Command Query Responsibility Segregation (CQRS) and Event Sourcing, detailing architecture, implementation patterns, comparisons with alternatives, and deep dives for senior engineers.

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.

Transactional Outbox, Saga, CQRS, Event Sourcing, database-per-service, and data consistency patterns in distributed architectures.

Technical guide to the Database-per-Service pattern, comparing data access options like API Composition, CQRS, and transaction management.

Strategies for handling high read QPS including caching layers, read replicas, CDN, CQRS, and database indexing. Covers Redis patterns, cache invalidation, consistency models, fan-out strategies, and senior-level deep dives into coherence, hot keys, and tail latency.

A beginner-friendly guide explaining Web Authentication, JWT, Bearer Tokens, Cookies, Access Tokens, CORS, CSRF, and the distinction between CSRF and CQRS.