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  • Research: demonstrate if parallel SQL queries are worthwhile · 2 ✖

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  • NONE · 2 ✖
id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions issue performed_via_github_app
1111451790 https://github.com/simonw/datasette/issues/1727#issuecomment-1111451790 https://api.github.com/repos/simonw/datasette/issues/1727 IC_kwDOBm6k_c5CP2iO glyph 716529 2022-04-27T20:30:33Z 2022-04-27T20:30:33Z NONE

I should try seeing what happens with WAL mode enabled.

I've only skimmed above but it looks like you're doing mainly read-only queries? WAL mode is about better interactions between writers & readers, primarily.

 
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 Research: demonstrate if parallel SQL queries are worthwhile 1217759117  
1111448928 https://github.com/simonw/datasette/issues/1727#issuecomment-1111448928 https://api.github.com/repos/simonw/datasette/issues/1727 IC_kwDOBm6k_c5CP11g glyph 716529 2022-04-27T20:27:05Z 2022-04-27T20:27:05Z NONE

You don't want to re-use an SQLite connection from multiple threads anyway: https://www.sqlite.org/threadsafe.html

Multiple connections can operate on the file in parallel, but a single connection can't:

Multi-thread. In this mode, SQLite can be safely used by multiple threads provided that no single database connection is used simultaneously in two or more threads.

(emphasis mine)

 
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 Research: demonstrate if parallel SQL queries are worthwhile 1217759117  

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