MinIO server allows streaming compression to ensure efficient disk space usage. Compression happens inflight, i.e objects are compressed before being written to disk(s). MinIO uses
klauspost/compress/s2 streaming compression due to its stability and performance.
This algorithm is specifically optimized for machine generated content. Write throughput is typically at least 300MB/s per CPU core. Decompression speed is typically at least 1GB/s.
This means that in cases where raw IO is below these numbers compression will not only reduce disk usage but also help increase system throughput.
Typically enabling compression on spinning disk systems will increase speed when the content can be compressed.
Install MinIO - MinIO Quickstart Guide.
2. Run MinIO with compression
Compression can be enabled by updating the
compress config settings for MinIO server config. Config
compress settings take extensions and mime-types to be compressed.
$ mc admin config get myminio compression compression extensions=".txt,.log,.csv,.json,.tar,.xml,.bin" mime_types="text/*,application/json,application/xml"```
Default config includes most common highly compressible content extensions and mime-types.
$ mc admin config set myminio compression extensions=".pdf" mime_types="application/pdf"
To enable compression for all content, with default extensions and mime-types.
~ mc admin config set myminio compression
The compression settings may also be set through environment variables. When set, environment variables override the defined
compress config settings in the server config.
export MINIO_COMPRESS="on" export MINIO_COMPRESS_EXTENSIONS=".pdf,.doc" export MINIO_COMPRESS_MIME_TYPES="application/pdf"
Already compressed objects are not fit for compression since they do not have compressible patterns. Such objects do not produce efficient
LZ compressionwhich is a fitness factor for a lossless data compression. Below is a list of common files and content-types which are not suitable for compression.
mkv| (MKV media)
All files with these extensions and mime types are excluded from compression, even if compression is enabled for all types.
MinIO does not support encryption with compression because compression and encryption together potentially enables room for side channel attacks like
CRIME and BREACH
MinIO does not support compression for Gateway (Azure/GCS/NAS) implementations.
To test the setup
To test this setup, practice put calls to the server using
mc and use
mc ls on the data directory to view the size of the object.