b3nd/sdk provides client/server application protocol with multiple backend support and batteries included

b3nd/sdk is intended to support the design of allowing applications to manage their data schemas on their clientside frontends and use a secure and scalable backend solution that is flexible both ways both for the client app and the backend provider

b3nd/sdk is used in applications that are nodes to a network that may be local and made of 1 and can run even on your browser using local storage or indexeddb or in memory even, same for a script, or can connect to an http api that runs a simple deno kv or sqlite backend, or connects with multiple other nodes via websocket and http to broadcast and distribute persistence

Target Module Components Topology

b3nd/sdk

• backends/{memory,http,websocket,localStorage,denokv,postgres,...}
• client
• types

b3nd/sdk/backends export unified interfaces for different backends, they require initialization with shared standards like backend schema that maps program urls (protocol://toplevel) to validation functions, and also take custom configuration related to the actual backend, i.e. connection string for postgres, url for websocket and http and so on

b3nd/sdk/client exports unified interface to route message for multiple backends, it's initialized with a client schema that maps programs urls (protocol://toplevel) to target backend instance programs

So while backend schema defines what programs are supported and available in a backend instance, the client schema defines what programs are routed to what backends

This way browser apps can communicate with multiple http and websocket backends, as well as have a local instance; also http apis and websocket servers can be setup in meshes to work together for HA or other distributed designs

Development

b3nd/sdk must

• ALWAYS have a test for each component to automate validation and simplify troubleshooting
• NEVER catch/hide/garble errors
• ALWAYS leave it to the user to decide how to best handle errors for their applications