> For the complete documentation index, see [llms.txt](https://docs.lenses.io/latest/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lenses.io/latest/k2k/1.0/configuration/source-topics.md).

# Source topics

K2K supports the replication of multiple topics, which can be specified by name or with a regular expression.

## By Name

This configuration block demonstrates how to replicate a specific list of topics. The `topic` key is an array that contains the exact names of the topics you want to replicate, in this case `"prod-topic-1"` and `"prod-topic-2"`.

```yaml
replication:
  - source:
      topic:
        - "prod-topic-1"
        - "prod-topic-2"
```

## By Pattern

This configuration block demonstrates how to replicate topics that match a specific naming pattern. The `topic` key is a string containing a regular expression. In this example, `"prod.*"` will select and replicate all topics whose names begin with "prod".

```yaml
replication:
  - source:
      topic: "prod.*"
```


---

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