Demo Feed Handler configuration dialog 3

Data Feed Handler listens for administrative requests from Operations Console and resend requests from subscribers. Use this dialog to set different listening ports and performance options.

Data Feed Handler configuration dialog 3
Table A-3: Demo Feed Handler dialog 3 configuration options

Field name

Default value

Description

Administration Listening Port

3002

Identifies the listening port that the publisher uses to monitor administrative requests from Operations Console.

Resend Listening Port

3003

Identifies the port that the publisher uses to resend cached message packets to the subscriber. Publishers maintain a cache of recently sent message packets to ensure that the subscriber processes all message deliveries.

Number of packet buffers

10000

Identifies the number of packet buffers. The publisher holds onto arriving packets of messages until the packets are processed. The number of packet buffers is per data stream.

This setting can have a value between 1 and 4 billion, but the machine must have enough memory to hold the number of packets specified. This setting should be adjusted if resend requests from publishers are failing, because the packet no longer exists at the publisher.

For publishers, a value of 10000 will usually provide sufficient packet history to maintain data integrity under moderate loads.