Amazon DynamoDB
DynamoDB mastery for DVA-C02. Covers partition keys, sort keys, GSI vs LSI, read/write capacity modes, DynamoDB Streams, DAX, TTL, transactions, and the most common exam scenarios and anti-patterns.
DynamoDB mastery for DVA-C02. Covers partition keys, sort keys, GSI vs LSI, read/write capacity modes, DynamoDB Streams, DAX, TTL, transactions, and the most common exam scenarios and anti-patterns.
Patterns for maintaining data consistency in distributed systems including database transactions, eventual consistency, the outbox pattern, idempotency, and conflict resolution.
A comprehensive guide to database ACID properties (Atomicity, Consistency, Isolation, Durability) for both beginners and experienced engineers.
Deep dive into Hibernate transaction semantics, locking, N+1 diagnostics, and performance tuning in Spring applications.
A complete guide to Kafka exactly-once semantics — delivery guarantees, idempotent producer, transactions, read_committed consumers, Kafka Streams EOS, zombie producer fencing, two-phase commit internals, and production patterns. Beginner through senior depth.
Deep dive into Redis pipelining for throughput optimization, MULTI/EXEC transactions, optimistic locking with WATCH, and atomic Lua scripting — with production patterns and pitfalls.
A complete guide to the Saga Pattern — from real-world analogies for beginners to choreography vs orchestration internals, compensating transactions, idempotency, state machine design, and failure recovery for senior engineers.
A detailed explanation and senior deep dive into managing transactions in Spring Boot and Spring Data JPA, complete with real-world examples.
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.
ACID properties, isolation levels, locking mechanisms, MVCC, deadlocks, and optimistic vs pessimistic concurrency.
A comprehensive guide to Two-Phase Commit (2PC) and Three-Phase Commit (3PC) — from real-world analogies for beginners to WAL internals, failure modes, and XA implementation for senior engineers.