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How would you design parallel grep for huge JSONL files? (lemmy.world)

submitted 7 months ago by dhruv3006@lemmy.world to c/programming@programming.dev

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I need to scan very large JSONL files efficiently and am considering a parallel grep-style approach over line-delimited text.

Would love to hear how you would design it.

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[+] Bazell@lemmy.zip 1 point 7 months ago* (2 children)

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[–] anton@lemmy.blahaj.zone 0 points 7 months ago (1 child)

Don't have a thread doing line by line file reads, just to have it in memory. There is a piece of software optimized for tasks like this, the OS.
Just mmap your file and start processing.