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Distributed locks ensure only one server performs a task, avoiding duplication.

Synchronous communication waits for a response, while asynchronous continues without waiting.

Message queues allow services to communicate asynchronously, improving scalability and reliability.

The Transactional Outbox Pattern ensures database updates and event publishing are synchronized to avoid losing events.

Message delivery semantics define how messages are sent in distributed systems and handle failures.

Distributed backpressure helps manage the flow of work between services to prevent overload.

Request-Response asks for a result, while Events notify that something has happened.

A timeout indicates a deadline was exceeded, not necessarily a failure.

gRPC supports four communication patterns: Unary, Server Streaming, Client Streaming, and Bidirectional Streaming.

Microservices can communicate using five key patterns based on their needs.

The Bulkhead Pattern isolates resources to protect critical workloads from failures.