[Solved] Why does async batch processing with Promise.all sometimes fail silently if one request fails? — Ans: Because Promise.all rejects immediately on the first failure, ignoring other... | Rest API

Rest API - Batch and Bulk Operations

Why does async batch processing with Promise.all sometimes fail silently if one request fails?

ABecause Promise.all retries failed requests automatically without notifying.

BBecause Promise.all converts all errors into successful responses.

CBecause Promise.all waits for all requests to succeed before resolving.

DBecause Promise.all rejects immediately on the first failure, ignoring other results.

Step-by-Step Solution

Solution:

Step 1: Understand Promise.all error behavior
Promise.all rejects as soon as any Promise rejects, stopping further processing.
Step 2: Identify why failures may seem silent
If not handled, the rejection may be unobserved, causing silent failure.
Final Answer:
Because Promise.all rejects immediately on the first failure, ignoring other results. -> Option D
Quick Check:
Promise.all rejects on first error [OK]

Quick Trick: Promise.all fails fast on first rejected Promise [OK]

Common Mistakes:

MISTAKES

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Why does async batch processing with Promise.all sometimes fail silently if one request fails?