RequestDedup

Coalesces identical concurrent requests into a single network call.

import { RequestDedup } from 'super-http'

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Usage via HttpClient

client.dedup()

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Direct usage

const dedup = new RequestDedup()

const [a, b, c] = await Promise.all([
  dedup.execute('GET:/users/1', () => client.get('/users/1')),
  dedup.execute('GET:/users/1', () => client.get('/users/1')),
  dedup.execute('GET:/users/1', () => client.get('/users/1')),
])
// callCount = 1, a === b === c

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API

execute<T>(key, fn)

execute<T>(key: string, fn: () => Promise<T>): Promise<T>

Executes fn, coalescing concurrent calls with the same key. Once the request settles, the entry is removed — subsequent calls start fresh.

size

get size(): number

Number of in-flight deduplicated requests.

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Key format (via HttpClient)

When using .dedup() on HttpClient, the key is automatically computed as:

METHOD:url:JSON(params)

e.g. GET:/users/1:"" or GET:/search:"{"q":"foo"}"