Druid supports http request decompression and response compression, to use this, http request header `Content-Encoding:gzip` and `Accept-Encoding:gzip` is needed to be set.
# General Configuration
|Property|Description|Default|
|--------|-----------|-------|
|`druid.server.http.compressionLevel`|The compression level. Value should be between [-1,9], -1 for default level, 0 for no compression.|-1 (default compression level)|