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

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

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

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

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

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

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

The Saga Pattern manages distributed transactions using local transactions and compensating actions.

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

gRPC allows efficient communication between services using a structured request-response model.

Protobuf schema evolution requires careful changes to avoid breaking existing clients.

REST, RPC, and gRPC are different methods for communication in software systems.

RPC allows one service to call a function in another service over the network.