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From Unstructured Logs to Clean JSON: A Free-Model ETL Case Study

This story is from 2026-08-25. It is preserved in the archive; the latest stories are on the live feed.

Three months ago I inherited a log file from an old Node.js application. It was 500 lines of mixed formats: some lines had bracketed timestamps, some had ISO 8601 dates, some had no timestamps at all. I needed structured JSON for a simple analytics query. This article is a walkthrough of the normal…

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  1. 2026-08-25 04:51 · DEV Community — AI
    From Unstructured Logs to Clean JSON: A Free-Model ETL Case Study

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