Superposition Provider - what is it?

[knutties]

Superposition Provider (aka ConfigurationResolver)

Superposition Provider is a library that allows applications that use Superposition as their configuration backend to resolve configurations in their application code.

note: ConfigurationResolver or just Resolver seems like a better name than provider for the library. The Provider name is a overhang from the OpenFeature provider terminology.

Primary interface

• Resolve configuration given single key and evaluation context (standard openfeature interface)
• Resolve full configuration given the evaluation context

Resolution flavours

• Local resolution (using our evaluation function natively in each programming language)
  • Remote data source
    • Sources include http, redis
    • Refresh mechanism to be supported
    • Use last known good version if refresh fails
  • Local data source
    • file with no automated refresh (manual refresh)
    • watch for file changes automaticatlly (watch mode)
    • always read file for latest config data (ondemand)
• Remote resolution
  • http based remote resolution
  • redis module remote resolution

Resolution caching

• all resolution caching is local with ttl and max cache entries (or cache size) support

Language support

Resolution support is to be provided in all popular programming languages.

• Java
• Python
• Javascript
• Rust
• Go
• Swift
• Kotlin