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81 lines
2.3 KiB
Markdown
81 lines
2.3 KiB
Markdown
# Pausing Between Reconnect Attempts
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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, libraries provide a wait setting. This setting will pause the reconnect logic if the same server is being tried multiple times **in a row**. In the previous example, if you have 3 servers and 6 attempts, the Java library would loop over the three servers. If none were connectable, it will then try all three again. However, the Java client doesn’t wait between each attempt, only when trying the same server again, so in that example the library may never wait. If on the other hand, you only provide a single server URL and 6 attempts, the library will wait between each attempt.
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{% tabs %}
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{% tab title="Go" %}
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```go
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// Set reconnect interval to 10 seconds
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nc, err := nats.Connect("demo.nats.io", nats.ReconnectWait(10*time.Second))
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if err != nil {
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log.Fatal(err)
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}
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defer nc.Close()
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// Do something with the connection
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```
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{% endtab %}
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{% tab title="Java" %}
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```java
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Options options = new Options.Builder().
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server("nats://demo.nats.io:4222").
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reconnectWait(Duration.ofSeconds(10)). // Set Reconnect Wait
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build();
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Connection nc = Nats.connect(options);
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// Do something with the connection
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nc.close();
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```
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{% endtab %}
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{% tab title="JavaScript" %}
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```javascript
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let nc = NATS.connect({
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reconnectTimeWait: 10 * 1000, //10s
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servers: ["nats://demo.nats.io:4222"]
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});
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```
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{% endtab %}
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{% tab title="Python" %}
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```python
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nc = NATS()
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await nc.connect(
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servers=["nats://demo.nats.io:4222"],
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reconnect_time_wait=10,
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)
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# Do something with the connection
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await nc.close()
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```
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{% endtab %}
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{% tab title="Ruby" %}
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```ruby
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require 'nats/client'
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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|
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# Do something with the connection
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# Close the connection
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nc.close
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end
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```
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{% endtab %}
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{% tab title="TypeScript" %}
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```typescript
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// will throw an exception if connection fails
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let nc = await connect({
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reconnectTimeWait: 10*1000, //10s
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servers: ["nats://demo.nats.io:4222"]
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});
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nc.close();
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```
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{% endtab %}
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{% endtabs %}
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