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Why is shuffle support needed? (medium.com)

shuffle execution plan hash table memory allocation performance improvement scalability

The article discusses the necessity of shuffle support in database operations, highlighting its benefits in preventing memory allocation failures, enhancing scalability, and improving performance. It emphasizes the role of shuffle in redistributing data for more efficient processing.
Main Points
- Importance of Shuffle SupportShuffle support is crucial for addressing the challenges of memory allocation failure, enhancing the horizontal scalability of compute nodes, and improving overall performance by breaking down large hash tables into smaller, more manageable pieces.
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Compressing Chess Moves for Fun and Profit (mbuffett.com)

Chess Data Compression performance improvement Encoding

The article discusses innovative ways of compressing chess moves through encoding, allowing for significant reductions in database size and enhancements in query performance. The author highlights the inefficiencies of traditional text notation and explores different encoding strategies to more efficiently store chess moves, showcasing potential savings in storage space. Furthermore, the article outlines the impact of these methods on database performance and touches on the prowess of computers in handling these encoding and decoding operations efficiently.
Main Points
- Inefficiency of Text NotationThe current text notation of chess moves, such as Qxf7 (queen takes on f7), is highly inefficient for storage purposes.
- Efficient Encoding of MovesThrough clever encoding, it's possible to significantly compress the number of bits needed to store a chess move, achieving savings of up to 71.43%.
- Real-world Application BenefitsReal-world application of this encoding method can lead to a substantial reduction in database size and enhancement in query speed, driving significant performance improvements.
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