How do I specify partitions for production messages

[gopherhiro]

No description provided.

[gopherhiro]

	msg := &sarama.ProducerMessage{
		Topic:     "example-topic",
		Partition: 0,
		Value:     sarama.StringEncoder("Hello, Kafka! - 1, i: " + string(i)),
	}

I specified it explicitly, but it didn't work

[gopherhiro]

2024/03/30 21:54:46 Message sent to partition 0 at offset 28640
2024/03/30 21:54:47 Message sent to partition 0 at offset 28642
2024/03/30 21:54:48 Message sent to partition 1 at offset 15024
2024/03/30 21:54:49 Message sent to partition 1 at offset 15025
2024/03/30 21:54:50 Message sent to partition 1 at offset 15027