[[email protected] type]$ cat input.conf 
input {
        file {
                type => "type_a"
                path => ["/usr/local/logstash-2.3.4/config/type/a.txt"]
        }
    
       file { 
                type => "type_b" 
                path => ["/usr/local/logstash-2.3.4/config/type/b.txt"] 
        } 

 
}


output {
     if [type] == "type_a" { 
        redis {
                host => "192.168.32.67"
                data_type => "list"
                key => "type_a:redis"
                port=>"6379"
                password => "1234567"
        }
}
      else if [type] == "type_b"{
       redis { 
                host => "192.168.32.67" 
                data_type => "list" 
                key => "type_b:redis" 
                port=>"6379" 
                password => "1234567" 
        } 
}
}
---------------------------------------------------

[
 
[email protected] type]$ cat output.conf 
input {

        redis {
                host => "192.168.32.67"
                data_type => "list"
                key => "type_a:redis"
                password => "1234567"
                port =>"6379"
        }


        redis {
                host => "192.168.32.67"
                data_type => "list"
                key => "type_b:redis"
                password => "1234567"
                port =>"6379"
        }


}
output {
      if   [type] == "type_a"{ 
		stdout {
			codec => rubydebug
		}
      }  
      else if  [type] == "type_b"{
                stdout {
                        codec =>json
                } 
  
  }

}


[
 
[email protected] type]$  ../../bin/logstash -f output.conf 
Settings: Default pipeline workers: 1
Pipeline main started
{
       "message" => "aaaaaaaa",
      "@version" => "1",
    "@timestamp" => "2016-09-16T06:26:07.211Z",
          "path" => "/usr/local/logstash-2.3.4/config/type/a.txt",
          "host" => "0.0.0.0",
          "type" => "type_a"
}


{"message":"aaaaaaaa","@version":"1","@timestamp":"2016-09-16T06:26:31.079Z","path":"/usr/local/logstash-2.3.4/config/type/b.txt","host":"0.0.0.0","type":"type_b"}