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colmmacc's profile
Colm MacCárthaigh
Colm MacCárthaigh
Colm MacCárthaigh
@colmmacc

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Colm MacCárthaigh

@colmmacc

AWS, Apache, Crypto, Irish Music, Haiku, Photography

Seattle
notesfromthesound.com
Joined April 2008

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    1. Cindy Sridharan‏ @copyconstruct 16 Jun 2019
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      I ❤️ data structures. I especially love learning about real world use cases of data structures. What’s your favorite data structure (bonus if it’s something you’ve coded in real life to solve a fun problem). 😀

      69 replies 75 retweets 465 likes
      Colm MacCárthaigh‏ @colmmacc 16 Jun 2019
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      Replying to @copyconstruct

      Probably a level-compressed suffix trie. It's so versatile. Implemented it a few times for CIDR matching in routing or ACL tables. Then used it for string matching - often faster than a hash table! Reverse a domain and you can use one for efficient SSL or DNS wildcards.

      7:59 PM - 16 Jun 2019
      • 4 Retweets
      • 68 Likes
      • Santhosh Manohar Suraj Srinivasa Quantined bowlofstew AdvisorCFA Andrei Savu Patrick McDowell Jacob Ackley-Smith Samer Kanjo (Mark V) Bala Subra
      4 replies 4 retweets 68 likes
        1. New conversation
        2. Cindy Sridharan‏ @copyconstruct 16 Jun 2019
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          Replying to @colmmacc

          Ooh that’s a good one. I think you’ll enjoy the talk preceeding yours at QCon. It’s about EBTrees used in HAProxy for string and IP matches (it says on the tin it can match the full internet BGP routing table), stick tables (stores cookies, headers etc in EBTrees) and more.

          1 reply 0 retweets 18 likes
        3. Colm MacCárthaigh‏ @colmmacc 16 Jun 2019
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          Replying to @copyconstruct

          I will definitely enjoy that!

          0 replies 0 retweets 1 like
        4. End of conversation
        1. New conversation
        2. Arindam Mukherjee‏ @ErrInDam 16 Jun 2019
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          Replying to @colmmacc @copyconstruct

          Do you have any implementation pointers? Thanks.

          1 reply 0 retweets 0 likes
        3. Colm MacCárthaigh‏ @colmmacc 16 Jun 2019
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          Replying to @ErrInDam @copyconstruct

          here's a cool place to begin:https://fanf.livejournal.com/137283.html 

          0 replies 0 retweets 2 likes
        4. End of conversation
        1. New conversation
        2. Wes‏ @weskerfoot 16 Jun 2019
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          Replying to @colmmacc @copyconstruct

          Suffix arrays are supposedly good as well but the algorithms for constructing them make me want to run away screaming from my computer

          1 reply 0 retweets 2 likes
        3. Wes‏ @weskerfoot 16 Jun 2019
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          Replying to @weskerfoot @colmmacc @copyconstruct

          E.g. https://en.wikipedia.org/wiki/Ukkonen%27s_algorithm …

          1 reply 0 retweets 1 like
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