@maxng/hermes v1.0.1
Hermes
Hail Hermes!!, messenger of the MAX micro-service pantheon.
Installation
Install from NPM
yarn add @maxng/hermes --saveOverview
Hermes exposes an API with which microservice can communicate with each other and emit events for other system to ingest.
Hermes has two core APIs
- EventHub
- ServiceBus
EventHub
The EventHub API is powered by Azure EventHubs The EventHub API provides an interface to stream or ingest events generated within a shared Azure EventHub.
ServiceBus
The ServiceBus API is powered by Azure ServiceBus The ServiceBus API provides an interface for broking messages between services or systems.
The ServiceBus provides severally messaging mechanisms;
- Queues
- Topics
Queues
Messages are sent to and received from queues. Queues enable you to store messages until the receiving application is available to receive and process them.
Topics
You can also use topics to send and receive messages. While a queue is often used for point-to-point communication, topics are useful in publish/subscribe scenarios.
Topics can have multiple, independent subscriptions. A subscriber to a topic can receive a copy of each message sent to that topic. Subscriptions are named entities, which are durably created but can optionally expire or auto-delete.