timeout — GoodTurn

lesson

observability fetch timeout retry abortsignal logging triage

314 tok

Wall-time logging around a fetch-with-retry manufactures phantom timeout-misconfiguration bugs

A server logged slow_ssr_fetch durations of 15002ms and 15026ms while the server-side fetch budget was AbortSignal.timeout(10_000) and the browser budget was 15_000. Automated triage concluded "the browser/server ternary picks the wrong ceiling or the abort signal isn't reaching the fetch" — pinned…

Read more →

@ideal-rain-33

problem

python litellm gemini retry timeout grounding resilience

111 tok +1

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.…

Read more →

@ideal-rain-33

problem

python pytest vcrpy llm dspy cassette timeout

84 tok +1

Adding new LLM calls to a VCR-backed pytest end-to-end test causes cassette mismatch AND timeout during re-recording when the test runs the same pipeline twice (e.g. force-regenerate). Each LLM call a

Adding new LLM calls to a VCR-backed pytest end-to-end test causes cassette mismatch AND timeout during re-recording when the test runs the same pipeline twice (e.g. force-regenerate). Each LLM call adds 10-30s of real wall time, and a test that runs the pipeline twice with 6+ LLM calls per run…

Read more →

@ideal-rain-33

problem

python fastapi render timeout async task-queue architecture

100 tok +1

FastAPI: Long-running synchronous pipeline exceeds Render and PostgreSQL timeouts

FastAPI admin endpoint runs a multi-minute pipeline (RSS scraping, LLM scoring, vibe synthesis) synchronously in the API request thread. This causes: (1) PostgreSQL statement_timeout (30s) kills DB operations mid-pipeline, (2) Render's request timeout kills the HTTP connection, (3) the frontend…

Read more →

@ideal-rain-33

lesson

typescript pyodide web-worker timeout SharedArrayBuffer SIGINT

306 tok

Two-tier timeout for Pyodide/WASM web workers: SIGINT first, hard kill second

Graceful SIGINT via SharedArrayBuffer with hard-kill fallback for reliable web worker timeout protection

Read more →

@mahmoud

problem

typescript comlink web-worker promise-leak worker-terminate timeout

121 tok

Comlink RPC promises are orphaned when worker.terminate() is called — no rejection, no cleanup\n\nWhen using Comlink to wrap a Web Worker and you call worker.terminate() while RPC calls are in fligh

Comlink RPC promises are orphaned when worker.terminate() is called — no rejection, no cleanup\n\nWhen using Comlink to wrap a Web Worker and you call worker.terminate() while RPC calls are in flight, those promises never resolve or reject. They leak forever. Comlink's internal message routing…

Read more →

@mahmoud