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AndresFreundTec's profile
Andres Freund (Tech)
Andres Freund (Tech)
Andres Freund (Tech)
@AndresFreundTec

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Andres Freund (Tech)

@AndresFreundTec

Postgres developer, working at Microsoft. Also: politics nerd, expat German in the US. Account for tech related things. For politics: @AndresFreundPol

San Francisco, CA
Joined August 2017

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    1. Lukas Eder‏ @lukaseder Feb 10
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      OH: "PostgreSQL is the Linux of databases" It's probably equally unstoppable and will completely dominate the database ecosystem in the next 10-20 years. What's your opinion on this?

      87 replies 141 retweets 646 likes
    2. Federico Razzoli‏ @FedericoRazzol1 Feb 10
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      Replying to @lukaseder @MarkusWinand

      I think that "one size fits all" is a myth. #PostgreSQL has many technical advantages, but two problems damage it a lot: 1) its community doesn't make criticism, which is essential to improve 2) there is no proper bug tracker

      6 replies 5 retweets 15 likes
    3. think(x)‏ @thinkx Feb 10
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      Replying to @FedericoRazzol1 @lukaseder @MarkusWinand

      tbh no one likes taking criticism.. try proposing as recommendations instead of criticisms

      3 replies 0 retweets 0 likes
    4. Federico Razzoli‏ @FedericoRazzol1 Feb 10
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      Replying to @thinkx @lukaseder @MarkusWinand

      Make actually meant make. I'm not complaining about some bad reply I received, it didn't happen. I'm observing that the PostgreSQL community only says great things about their favorite DB. As a consequence, most of them don't feel that its flaws should be fixed.

      6 replies 0 retweets 1 like
    5. Lukas Eder‏ @lukaseder Feb 11
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      Replying to @FedericoRazzol1 @thinkx @MarkusWinand

      I can definitely agree with that. Try discussing the benefits of a sophisticated execution plan cache (e.g. Oracle's) with them 😁

      3 replies 0 retweets 2 likes
    6. Tomas Vondra‏ @fuzzycz Feb 11
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      Replying to @lukaseder @FedericoRazzol1 and

      I think the benefits of a sophisticated plan cache are generally accepted and we'd love to have the feature. The issue is how to make it work with the current architecture, without hurting existing users. So far there were other features with higher priority, better cost/benefit.

      1 reply 0 retweets 2 likes
    7. Markus Winand‏ @MarkusWinand Feb 11
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      Replying to @fuzzycz @lukaseder and

      IMHO nobody wants a sophisticated plan cache. The reason Oracle has it is because they have failed so many times at plan caching that the stack of fixes looks sophisticated. In the meantime it works mostly. Less sophistication due to fewer incomplete attempts would be better.

      4 replies 2 retweets 4 likes
    8. Andres Freund (Tech)‏ @AndresFreundTec Feb 11
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      Replying to @MarkusWinand @fuzzycz and

      While I would say that my (long ago) exposure to the plancache in oracle was not great, I don't agree with the general sentiment. The amount of time we spend planning, and the amount of memory we need for our crappy per-backend plancache, is just not reasonable.

      1 reply 0 retweets 4 likes
    9. Andres Freund (Tech)‏ @AndresFreundTec Feb 11
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      Replying to @AndresFreundTec @MarkusWinand and

      To improve we imo most urgently need: 1) sharing of most common plans to reduce memory usage 2) automated plan generalization to avoid needing separate plans when a parameter would do just as well 3) much better approach to dealing with plans where concrete values are important.

      1 reply 0 retweets 4 likes
    10. Markus Winand‏ @MarkusWinand Feb 11
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      Replying to @AndresFreundTec @fuzzycz and

      I didn't mean to say that a shared plan cache is not good or useful. I was mostly rumbling about the word 'sophisticated', which has a positive annotation. "somphisticated" is not what I want. Simple, yet doing the job is what I want (I know, this is the hard part).

      1 reply 0 retweets 0 likes
      Andres Freund (Tech)‏ @AndresFreundTec Feb 11
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      Replying to @MarkusWinand @fuzzycz and

      Meh. I think pursuing simplicity as the prime goal for problems that just aren't that simple is what leads to things that badly work in the real world. Like our plancache (which is only used for prepared statements, but even there isn't not good enough).

      12:28 PM - 11 Feb 2020
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      • Lukas Eder
      1 reply 0 retweets 1 like
        1. New conversation
        2. Markus Winand‏ @MarkusWinand Feb 11
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          Replying to @AndresFreundTec @fuzzycz and

          Pfuh, I neither didn't mean to say it is the only relevant thing. Maybe the 20/80 rule applies here: 20% sophistication to reach 80% of the benefit.

          2 replies 0 retweets 1 like
        3. Markus Winand‏ @MarkusWinand Feb 11
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          Replying to @MarkusWinand @AndresFreundTec and

          An example that comes to my mind: Oracle & histograms There are different types of histograms, some deprecated in the meanwhile (very limited from at beginning). Now they have a sophisticated solution, but (in the meanwhile) PostgreSQL has got most of that but less sophisticated

          1 reply 1 retweet 0 likes
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