clone #

Description #

The clone filter is used to clone and forward traffic to another handling flow. It can implement dual-write, multi-write, multi-DC synchronization, cluster upgrade, version switching, and other requirements.

Configuration Example #

A simple example is as follows:

flow:
  - name: double_write
    filter:
      - clone:
          flows:
            - write_to_region_a
            - write_to_region_b #last one's response will be output to client
  - name: write_to_region_a
    filter:
      - elasticsearch:
          elasticsearch: es1
  - name: write_to_region_b
    filter:
      - elasticsearch:
          elasticsearch: es2

The above example copies Elasticsearch requests to two different remote clusters.

Parameter Description #

Name	Type	Description
flows	array	Multiple traffic handling flows, which are executed one after another. The result of the last flow is output to the client.
continue	bool	Whether to continue the previous flow after traffic is migrated. The gateway returns immediately after it is set to `false`. The default value is `false`.