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seneca - A microservices toolkit for Node.js.

  •    Javascript

Seneca is a toolkit for writing microservices and organizing the business logic of your app. You can break down your app into "stuff that happens", rather than focusing on data models or managing dependencies.Use this module to define commands that work by taking in some JSON, and, optionally, returning some JSON. The command to run is selected by pattern-matching on the the input JSON. There are built-in and optional sets of commands that help you build Minimum Viable Products: data storage, user management, distributed logic, caching, logging, etc. And you can define your own product by breaking it into a set of commands - "stuff that happens". That's pretty much it.

hemera - 🔬 Writing reliable & fault-tolerant microservices with https://nats.io

  •    Javascript

Hemera (/ˈhɛmərə/; Ancient Greek: Ἡμέρα [hɛːméra] "day") is a small wrapper around the NATS driver. NATS is a simple, fast and reliable solution for the internal communication of a distributed system. It chooses simplicity and reliability over guaranteed delivery. We want to provide a toolkit to develop micro services in an easy and powerful way. We provide a pattern matching RPC style. You don't have to worry about the transport. NATS is powerful.Hemera has not been designed for high performance on a single process. It has been designed to create lots of microservices doesn't matter where they live. It choose simplicity and reliability as primary goals. It act together with NATS as central nervous system of your distributed system. Transport independency was not considered to be a relevant factor. In addition we use pattern matching which is very powerful. The fact that Hemera needs a broker is an argument which should be taken into consideration when you compare hemera with other frameworks. The relevant difference between microservice frameworks like senecajs, molecurer is not the performance or modularity its about the complexity you need to manage. Hemera is expert in providing an interface to work with lots of services in the network, NATS is the expert to deliver the message at the right place. Hemera is still a subscriber of NATS with some magic in routing and extensions. We don't have to worry about all different aspects in a distributed system like routing, load-balancing, service-discovery, clustering, health-checks ...

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