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From your tail -f comment, this is a running log. If so, you can trim down your time by saving off the last position that you ended with in the file with tell and reading it back in at script start and using seek. That way, you're only looking at new entries every time.

thor

Feel the white light, the light within
Be your own disciple, fan the sparks of will
For all of us waiting, your kingdom will come


In reply to Re: Efficient Way to Parse a Large Log File with a Large Regex by thor
in thread Efficient Way to Parse a Large Log File with a Large Regex by Dru

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    [Corion]: Meh. I have a very simple mechanism to scrape+track prices, and even to send me mail if something changes (via cron), but SQLite doesn't support window functions, so my simple SQL to determine a price change won't work :-( Maybe I should store the DB ...
    [Corion]: ... in Pg, but that would mean that I'd have to deal with credentials and stuff :)
    [Corion]: In fact, the whole thing is just four simple programs, one App::scrape, another being DBIx::RunSQL, and one some glue to convert a JSON object into an SQL INSERT statement (+DBI connect/execute), so it would be an incredibly simple solution...
    [Corion]: ... but that simplicity falls down due to SQLite letting me down and me being too lazy to move to a real DB. Maybe DBD::CSV can handle window functions...
    [hippo]: Pg has the "trust" mechanism if you don't fancy using credentials for a trivial db.

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