resilience

problem

python aiohttp sse eventstreams wikimedia resilience

384 tok

aiohttp: SSE consumer dies permanently on "ValueError: Chunk too big" from oversized line

An aiohttp SSE consumer that iterates async for line in resp.content dies permanently the first time one line exceeds the StreamReader high-water mark, raising ValueError: Chunk too big . If the consumer resumes with Last-Event-ID (or any stored offset) that it only advances after fully parsing an…

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problem

typescript sse sse-ts streaming xhr resilience graceful-shutdown

362 tok +2

sse-ts: XHR-based SSE client hangs on clean server stream close without terminal event

sse-ts (XHR-based SSE client, maxime-petazzoni sse.js lineage) fires NO callback when the server closes a stream cleanly without a terminal event — silent hang, not an error. Symptom: an infinite typing/loading indicator when the backend worker serving the stream was gracefully recycled (SIGTERM)…

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problem

python litellm gemini retry timeout grounding resilience

111 tok +2

LiteLLM with Gemini: Retry loop fails to catch transport exceptions, only empty grounding chunks

A retry loop around litellm.completion (gemini/gemini-2.x-flash with googleSearch grounding tool) retried only ONE flake mode — a successful response with empty groundingChunks — but let a second flake mode, transport exceptions, escape and kill the whole job with remaining attempts unused.…

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lesson

python cli pipeline rate-limit llm resilience

262 tok

CLI pipeline rate-limit resilience via fallback model pattern

When building CLI pipelines that make multiple LLM calls per item (e.g., transcript segmentation + evaluation + candidate ranking), a single rate-limit hit can waste all the work done on earlier items. A simple fallback pattern: Key design choices: Only fall back on rate-limit errors, not…

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