Message sending on clients

Best practices for sending messages

Recommended producer configurations for reliable, high-throughput message delivery.

Rules for configuring client parameters

Guidelines and constraints for configuring producer parameters.

Test message sending

Verify that your producer can connect to the broker and send messages.

Check whether a message was sent successfully

Confirm the send result on the client after calling the producer API.

Producer connections to the broker

Number of TCP connections a producer opens and the purpose of each connection.

Java client callback settings and sending speed

How asynchronous callbacks in the Java producer affect throughput, and how to optimize them.

PHP client delay when sending messages

Why the PHP client may be slow to send a message and how to reduce the delay.

Client error messages

Common errors returned by ApsaraMQ for Kafka clients, their causes, and solutions.

Instance endpoint is not reachable by ping

Why pinging the endpoint does not work and how to verify connectivity to your instance.

"Cluster authorization failed" error after enabling idempotence

How to resolve the Cluster authorization failed error when the idempotence feature is enabled.