> For the complete documentation index, see [llms.txt](https://doczhcn.gitbook.io/etcd/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doczhcn.gitbook.io/etcd/index-1/index-1/leasekeepalive.md).

# LeaseKeepAlive方法

LeaseKeepAlive 方法维持一个租约.

```java
rpc LeaseKeepAlive(stream LeaseKeepAliveRequest) returns (stream LeaseKeepAliveResponse) {}
```

## 消息体

请求的消息体是 `LeaseKeepAliveRequest`：

```java
message LeaseKeepAliveRequest {
  // ID 是要继续存活的租约的 ID
  int64 ID = 1;
}
```

应答的消息体是 `LeaseKeepAliveResponse`：

```java
message LeaseKeepAliveResponse {
  ResponseHeader header = 1;
  // ID 是从继续存活请求中得来的租约 ID
  int64 ID = 2;
  // TTL是租约新的 time-to-live
  int64 TTL = 3;
}
```