# Qatzip Compressor

Qatzip compressor provides Envoy with faster hardware-accelerated gzip compression by integrating with [Intel® QuickAssist Technology (Intel®
QAT)](https://www.intel.com/content/www/us/en/architecture-and-technology/intel-quick-assist-technology-overview.html) through the qatlib and QATzip libraries.

## Example configuration

An example for Qatzip compressor configuration is:

```
compressor_library:
  name: text_optimized
  typed_config:
    "@type": type.googleapis.com/envoy.extensions.compression.qatzip.compressor.v3alpha.Qatzip
    hardware_buffer_size: "SZ_8K"

```

## How it works

If enabled, the Qatzip compressor will:

-   attach Qat hardware
-   create Threadlocal Qat session context for each worker thread

When a new http request comes, one worker thread will process it using its Qat session context and send the data needed to be compressed to
Qat hardware. 

## Installing and using QATzip 

For information on how to build/install and use QATzip see
[QATzip](https://github.com/intel/QATzip).