Pcodec Alternatives

pcodec reviews and mentions

• Learnings from making things fast
  1 project | /r/rust | 19 Jul 2023

  Context: I've been iterating on my side project pcodec (a codec for columns of numerical data) and have gradually improved decompression speed from ~150MB/s to ~1GB/s. Not everything here is novel or Rust-specific, but here's what I've learned in the process:

• Compressing bytes?
  1 project | /r/rust | 20 May 2023
• Worries about tANS?
  5 projects | /r/compression | 22 Apr 2023

  For context: I'm creating an experimental successor to my library Quantile Compression, which does good compression for numerical sequences and has several users. I have a variable number of symbols which may be as high as 212 in some cases, but is ~26 in most cases. The data is typically 216 to 224 tokens long.

• Quantile Compression, a compression format for numerical data that improves compression ratio by ~30% over alternatives
  2 projects | /r/coolgithubprojects | 2 May 2022

  I'm not a member, but you can use the CLI to try it out pretty easily: https://github.com/mwlon/quantile-compression/tree/main/q_compress_cli . Let me know how it does

• I built Quantile Compression, which could make all our numerical columnar data 25% smaller.
  3 projects | /r/dataengineering | 22 Feb 2022

  You can try it out very easily with the CLI which works on CSV and Parquet columns now, e.g. cargo run --release compress --csv my.csv --col-name my_column out.qco

• Quantile Compression: 35% higher compression ratio for numeric sequences than any other compressor
  4 projects | /r/programming | 22 Feb 2022

  Right, please don't try to use it for general files. It looks like zpaq is kinda hard to set up except on windows, so I'm probably not going to, but I encourage you to try it out! There's an example you can use to generate a bunch of random numerical distributions, outputting binary files, .qco, and other formats.

• Q_compress: Lossless compressor and decompressor for numerical data
  1 project | news.ycombinator.com | 18 Feb 2022
• q_compress 0.7: still has 35% higher compression ratio than .zstd.parquet for numerical sequences, now with delta encoding and 2x faster than before
  6 projects | /r/rust | 17 Feb 2022

  Here's how you can generate benchmark data, including binary files: https://github.com/mwlon/quantile-compression/blob/main/q_compress/examples/primary.md

• Quantile Compression, a format and algorithm for numerical sequences offering 35% higher compression ratio than .zstd.parquet.
  4 projects | /r/compression | 17 Feb 2022

  I made a simple CLI for compressing and inspecting .qco files. Not available on package managers yet, but it's still pretty easy to try out: https://github.com/mwlon/quantile-compression/blob/main/CLI.md

• Quantile Compression (q-compress), a new compression format and rust library that shrinks real-world columns of numerical data 10-40% smaller than other methods
  3 projects | /r/rust | 26 Nov 2021
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