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A surprising? lesson in the speed of languages

Scenario: I had the need for a small tool that would parse logfiles of approximately 6 million lines. To each line apply two regexps to extract a few values, and using two separate dictionaries/hashmaps (choose your poison wrt terminology) calculate how many times each capture group int he regexp shows up.

All in all, this is not going to be a very performance critical run, as it will only parse about 4 times these 6 million lines per day, so even at worst case we're talking less than 100M regexp matches per day. Piece of cake for any language. And since it's a weekend and I don't have any time when I have to deliver this finished script, I set out to prove to myself that python is going to be fast enough for this.

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I speak at and organize conferences around Open Source in general and PostgreSQL in particular.

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PGConf.EU 2023
Dec 12-15, 2023
Prague, Czechia
PGConf.NYC 2023
Oct 3-5, 2023
New York, USA
PGDay UK 2023
Sep 12, 2023
London, United Kingdom
PGCon 2023
May 30-Jun 2, 2023
Ottawa, Canada
PGDay Chicago 2023
Apr 20, 2023
Chicago, USA
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