Added docs.

Signed-off-by: Pavel Kirilin <[email protected]>

docs/guide/cli.md

@@ -84,6 +84,15 @@ To enable this option simply pass the `--reload` or `-r` option to worker taskiq
 Also this option supports `.gitignore` files. If you have such file in your directory, it won't reload worker
 when you modify ignored files. To disable this functionality pass `--do-not-use-gitignore` option.
 
+### Graceful reload
+
+To perform graceful reload, send `SIGHUP` signal to the main worker process. This action will reload all workers with new code. It's useful for deployment that requires zero downtime, but don't use orchestration tools like Kubernetes.
+
+```bash
+taskiq worker my_module:broker
+kill -HUP <main pid>
+```
+
 ### Other parameters
 
 * `--no-configure-logging` - disables default logging configuration for workers.