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tech-log-backend/docs/runbooks/file-download-streaming-failure.md
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---
title: Runbook — DOWNLOAD_STREAMING_FAILURE (스트리밍 다운로드 실패)
category: TRANSIENT_DEPENDENCY
error_codes: [DOWNLOAD_STREAMING_FAILURE]
severity: P2
owner: oncall
last_updated: 2026-06-15
status: stub
---
# Runbook: DOWNLOAD_STREAMING_FAILURE (`runbook://file/download-streaming-failure`)
## Symptoms
- HTTP 503 with `error.code=DOWNLOAD_STREAMING_FAILURE`
- Streaming response truncated; backpressure or timeout (60s / 100MB limit)
## Diagnosis
- Check streaming response timeout configuration
- Review download size vs 100MB limit
## Action
- Verify storage backend is reachable
- Check for network congestion on download path
## Escalation
- Escalate to infra if storage backend is degraded
---
> **Stub**: Phase D2 — author body after domain adoption. (feature-operational-runbook-contract D9)