# Combined Upstreams The module allows combining multiple server groups into one. It introduces the `add_upstream`, `combine_server_singlets`, and `extend_single_peers` directives available within `upstream` configuration blocks, as well as a new `upstrand` configuration block for creating higher-level `upstream` blocks. In addition, it introduces the `dynamic_upstrand` directive for selecting `upstream` blocks at runtime. ## Installation To [install](https://en.angie.software//angie/docs/installation/index.md#install-packages) the module, use one of the following packages: - Angie: `angie-module-combined-upstreams` - Angie PRO: `angie-pro-module-combined-upstreams` ## Loading the module To use the module, load it in the `main{}` context: ```nginx load_module modules/ngx_http_combined_upstreams_module.so; ``` ## Additional information Detailed documentation and source code are available at: [https://github.com/lyokha/nginx-combined-upstreams-module](https://github.com/lyokha/nginx-combined-upstreams-module) Configuration examples and a detailed breakdown of the module directives: - [http://lin-techdet.blogspot.com/2011/10/nginx.html](http://lin-techdet.blogspot.com/2011/10/nginx.html) - [http://lin-techdet.blogspot.com/2015/12/nginx.html](http://lin-techdet.blogspot.com/2015/12/nginx.html)