node-finagle

Proof of concept lib of a finagle-like composable Service/Filter in node.

A Service is basically a function (input) => Promise<output>

The idea is provide composable wrappers to create smart Services on top of very simple ones.

Things to support in mind:

• Circuit breaking
• Batchcing
• Batch fork-join
• Retry
• Hedging requests (more info)

Ideally it should be built on top of proved libraries like dataloader, bluebird and generic-pool

Idea:

 
val filterStack = (
  FilterStack
    .prepare()
    .andThen(circuitBreaker(/* options */)),
    .andThen(caching(/* options */))
    .andThen(batching(/* options */))
    .andThen(dedup(/* options */))
    .andThen(forkJoin(/* options */)),
    .andThen(hedgeRequest(/* options */)),
);
 
val loader = filterStack.build((req) => client.loadMany(req.ids));
 
const x = loader(1);
const y = loader(2);