> For the complete documentation index, see [llms.txt](https://docs.natsclub.cn/cn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.natsclub.cn/cn/shi-yong-nats/developer/connecting/reconnect/wait.md).

# 重连尝试之间暂停

It doesn’t make much sense to try to connect to the same server over and over. To prevent this sort of thrashing, and wasted reconnect attempts, especially when using TLS, libraries provide a wait setting. Generally clients make sure that between two reconnect attempts to the **same** server at least a certain amount of time has passed. The concrete implementation depends on the library used.

This setting not only prevents wasting client resources, it also alleviates a [*thundering herd*](/cn/shi-yong-nats/developer/connecting/reconnect/random.md) situation when additional servers are not available.

{% tabs %}
{% tab title="Go" %}

```go
// Set reconnect interval to 10 seconds
nc, err := nats.Connect("demo.nats.io", nats.ReconnectWait(10*time.Second))
if err != nil {
    log.Fatal(err)
}
defer nc.Close()

// Do something with the connection
```

{% endtab %}

{% tab title="Java" %}

```java
Options options = new Options.Builder().
                            server("nats://demo.nats.io:4222").
                            reconnectWait(Duration.ofSeconds(10)).  // Set Reconnect Wait
                            build();
Connection nc = Nats.connect(options);

// Do something with the connection

nc.close();
```

{% endtab %}

{% tab title="JavaScript" %}

```javascript
const nc = await connect({
    reconnectTimeWait: 10 * 1000, // 10s
    servers: ["demo.nats.io"],
});
```

{% endtab %}

{% tab title="Python" %}

```python
nc = NATS()
await nc.connect(
   servers=["nats://demo.nats.io:4222"],
   reconnect_time_wait=10,
   )

# Do something with the connection

await nc.close()
```

{% endtab %}

{% tab title="Ruby" %}

```ruby
require 'nats/client'

NATS.start(servers: ["nats://127.0.0.1:1222", "nats://127.0.0.1:1223", "nats://127.0.0.1:1224"], reconnect_time_wait: 10) do |nc|
   # Do something with the connection

   # Close the connection
   nc.close
end
```

{% endtab %}

{% tab title="C" %}

```c
natsConnection      *conn      = NULL;
natsOptions         *opts      = NULL;
natsStatus          s          = NATS_OK;

s = natsOptions_Create(&opts);
if (s == NATS_OK)
    // Set reconnect interval to 10 seconds (10,000 milliseconds)
    s = natsOptions_SetReconnectWait(opts, 10000);
if (s == NATS_OK)
    s = natsConnection_Connect(&conn, opts);

(...)

// Destroy objects that were created
natsConnection_Destroy(conn);
natsOptions_Destroy(opts);
```

{% endtab %}
{% endtabs %}


---

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