# `Meta` Service - Region `Heartbeat`
+ Region heartbeat contains the current status of the region, the message looks like:

```
~!@// Region 2 heartbeat@!~
{
  "id": 2,
  "start_key": "7480000000000000FF4400000000000000F8",
  "end_key": "",
  "epoch": {
  	"conf_ver": 1,
  	"version": 34
  },
  "peers": [
  	{
    	"id": 3,
    	"store_id": 1,
    	"role_name": "Voter"
  	}],
  "leader": {
  	"id": 3,
  	"store_id": 1,
  	"role_name": "Voter"
  },
  "written_bytes": 0,
  "read_bytes": 1254600,
  "written_keys": 0,
  "read_keys": 33456,
  "approximate_size": 1,
  "approximate_keys": 100
}
```

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