dfb3275afe
A user on Upload got a white page while the engine's proxy answered many requests with nginx's rate-limit 503. - Pages render inside an error boundary, so a crash shows a message with Try again and Reload instead of unmounting the whole app. - A 503 or 429 without the engine's JSON reads "The engine is busy", and queries wait 5s, then 10s, before asking again instead of 1s. - Upload asks for knowledge details two at a time and reuses them until the document's knowledge status changes. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
20 lines
667 B
TypeScript
20 lines
667 B
TypeScript
import { describe, expect, it } from 'vitest'
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import { limiter } from './client'
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describe('limiter', () => {
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it('runs at most n calls at once, all of them, failures included', async () => {
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const limit = limiter(2)
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let running = 0, peak = 0
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const call = (n: number) => limit(async () => {
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peak = Math.max(peak, ++running)
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await new Promise(r => setTimeout(r, 5))
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running--
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if (n === 2) throw new Error('503')
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return n
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})
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const out = await Promise.allSettled([1, 2, 3, 4, 5].map(call))
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expect(peak).toBe(2)
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expect(out.map(r => (r.status === 'fulfilled' ? r.value : 'x'))).toEqual([1, 'x', 3, 4, 5])
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})
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})
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