mirror of
https://github.com/minio/minio.git
synced 2024-12-26 15:15:55 -05:00
61229b38f7
- Snappy is not and RLE compressor, it is LZ77 based. - Add `xz` as a common file type. - Add most common media container types. - Never heard of `application/x-spoon`. Google turns up a blank as well. - Change link to minio blog post on compression & encryption.
87 lines
3.5 KiB
Markdown
87 lines
3.5 KiB
Markdown
# Compression Guide [](https://slack.min.io)
|
|
|
|
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 [`golang/snappy`](https://github.com/golang/snappy) streaming compression due to its stability and performance.
|
|
|
|
## Get Started
|
|
|
|
### 1. Prerequisites
|
|
|
|
Install MinIO - [MinIO Quickstart Guide](https://docs.min.io/docs/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.
|
|
|
|
```json
|
|
"compress": {
|
|
"enabled": true,
|
|
"extensions": [".txt",".log",".csv", ".json"],
|
|
"mime-types": ["text/csv","text/plain","application/json"]
|
|
}
|
|
```
|
|
|
|
Since text, log, csv, json files are highly compressible, These extensions/mime-types are included by default for compression.
|
|
|
|
To update the configuration, use `mc admin config get` command to get the current configuration file for the minio cluster in json format, and save it locally.
|
|
|
|
```sh
|
|
$ mc admin config get myminio/ > /tmp/myconfig
|
|
```
|
|
|
|
After updating the compression configuration in /tmp/myconfig , use `mc admin config set` command to update the configuration for the cluster. Restart the MinIO server to put the changes into effect.
|
|
|
|
```sh
|
|
$ mc admin config set myminio < /tmp/myconfig
|
|
```
|
|
|
|
The compression settings may also be set through environment variables. When set, environment variables override the defined `compress` config settings in the server config.
|
|
|
|
```bash
|
|
export MINIO_COMPRESS="true"
|
|
export MINIO_COMPRESS_EXTENSIONS=".pdf,.doc"
|
|
export MINIO_COMPRESS_MIMETYPES="application/pdf"
|
|
```
|
|
|
|
### 3. Note
|
|
|
|
- Already compressed objects are not fit for compression since they do not have compressible patterns. Such objects do not produce efficient [`LZ compression`](https://en.wikipedia.org/wiki/LZ77_and_LZ78) which 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.
|
|
|
|
- Extensions
|
|
|
|
| `gz` | (GZIP)
|
|
| `bz2` | (BZIP2)
|
|
| `rar` | (WinRAR)
|
|
| `zip` | (ZIP)
|
|
| `7z` | (7-Zip)
|
|
| `xz` | (LZMA)
|
|
| `mp4` | (MP4)
|
|
| `mkv` | (MKV media)
|
|
| `mov` | (MOV)
|
|
|
|
- Content-Types
|
|
|
|
| `video/*` |
|
|
| `audio/*` |
|
|
| `application/zip` |
|
|
| `application/x-gzip` |
|
|
| `application/zip` |
|
|
| `application/x-bz2` |
|
|
| `application/x-compress` |
|
|
| `application/x-xz` |
|
|
|
|
- MinIO does not support encryption with compression because compression and encryption together potentially enables room for side channel attacks like [`CRIME and BREACH`](https://blog.minio.io/c-e-compression-encryption-cb6b7f04a369)
|
|
|
|
- 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.
|
|
|
|
## Explore Further
|
|
|
|
- [Use `mc` with MinIO Server](https://docs.min.io/docs/minio-client-quickstart-guide)
|
|
- [Use `aws-cli` with MinIO Server](https://docs.min.io/docs/aws-cli-with-minio)
|
|
- [Use `s3cmd` with MinIO Server](https://docs.min.io/docs/s3cmd-with-minio)
|
|
- [Use `minio-go` SDK with MinIO Server](https://docs.min.io/docs/golang-client-quickstart-guide)
|
|
- [The MinIO documentation website](https://docs.min.io)
|