Microservices

A domain-specific protocol means choosing a wire protocol that fits the *shape of the traffic* instead of defaulting to HTTP/JSON for everything.

An idempotent consumer is a message handler that produces the same end result whether a message is processed once or several times.

Messaging means services talk to each other by putting messages on a durable broker (Azure Service Bus, Kafka, RabbitMQ) instead of calling each other directly and waiting.

Remote Procedure Invocation (RPI) is the simplest way for one service to use another: the caller sends a request over the network (REST/HTTP, gRPC, or GraphQL), waits, and gets a response, as if it had called a local...

Summary.

Transaction Log Tailing is the way to get the events in your Transactional Outbox out to a message broker without writing a polling loop.