Friday, December 27, 2024

Advent of Code 2024 in pure SQL

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 On a whim I decided to do this years advent of code in pure SQL. That was an interesting experience that I can recommend to everybody beca...
6 comments:
Friday, December 13, 2024

What are important data systems problems, ignored by research?

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In November, I had the pleasure of attending the Dutch-Belgian DataBase Day , where I moderated a panel on practical challenges often overlo...
2 comments:
Tuesday, December 10, 2024

C++ exception performance three years later

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About three years ago we noticed serious  performance problems in C++ exception unwinding . Due to contention on the unwinding path these be...
2 comments:
Thursday, June 6, 2024

B-trees Require Fewer Comparisons Than Balanced Binary Search Trees

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Due to better access locality, B-trees are faster than binary search trees in practice -- but are they also better in theory ? To answer th...
Monday, February 19, 2024

SSDs Have Become Ridiculously Fast, Except in the Cloud

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In recent years, flash-based SSDs have largely replaced disks for most storage use cases. Internally, each SSD consists of many independent ...
21 comments:
Sunday, April 9, 2023

The Great CPU Stagnation

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For at least five decades, Moore's law consistently delivered increasing numbers of transistors. Equally significant, Dennard scaling ...
7 comments:
Tuesday, February 7, 2023

Five Decades of Database Research

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Since 1975, over 24 thousand articles have have been published in major database venues (SIGMOD, VLDB/PVLDB, ICDE, EDBT, CIDR, TODS, VLDB Jo...