LZ4

LZ4 is a lossless compression algorithm optimized for extreme speed, reaching decompression rates that approach the theoretical limits of RAM bandwidth.

Yann Collet designed LZ4 to prioritize throughput over maximum density: it delivers compression speeds exceeding 500 MB/s per core and scales linearly in multi-core environments. The decompression engine is significantly faster (often hitting the physical limits of hardware memory buses). This performance profile makes it the standard choice for the Linux kernel, ZFS file systems, and high-velocity data pipelines (like Apache Spark and Hadoop) where minimizing latency is more critical than saving every byte of disk space.

https://lz4.github.io/lz4/