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Simon Willison prototypes SQLite text history compression

Simon Willison has proposed a novel method for storing revision histories in SQLite databases by compressing a JSON array of all previous text versions. This approach leverages compression algorithms like zlib or Zstandard to significantly reduce storage space, as demonstrated by a prototype that compressed 1,000 revisions of a document from 20.4 MB to 80.3 KB. To further optimize performance, a suggestion was made to break the history into multiple rows, each containing a maximum of 128 revisions or 3MB of uncompressed JSON, to avoid the overhead of decompressing and recompressing the entire history on every edit. AI

IMPACT This method could significantly reduce storage costs for applications with extensive version histories, potentially impacting how AI models manage and store their training data or output logs.

RANK_REASON The item describes a prototype for a specific technical implementation, not a general release or research breakthrough.

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Simon Willison prototypes SQLite text history compression

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The item describes a prototype for a specific technical implementation, not a general release or research breakthrough.
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  1. Simon Willison TIER_1 English(EN) ·

    SQLite compressed text-history prototypes

    <p><strong>Research:</strong> <a href="https://github.com/simonw/research/tree/main/sqlite-text-history-prototype#readme">SQLite compressed text-history prototypes</a></p> <p>I'm perennially interested in options for storing revision histories in relational databases. While out o…