Cheap message deduplication IDs generator?

Technical Discussion
1

Hello fellow Gophers,

This is a code snippet from the official AWS documentation:

private static AmazonSNS snsClient;
private static final String MESSAGE_PAYLOAD = " 192.168.1.100 - - [28/Oct/2021:10:27:10 -0500] "GET /index.html HTTP/1.1" 200 3395";
private static final String MESSAGE_FIFO_GROUP = "server1234";

PublishRequest request = new PublishRequest()
    .withTopicArn(topicArn)
    .withMessage(MESSAGE_PAYLOAD)
    .withMessageGroupId(MESSAGE_FIFO_GROUP)
    .withMessageDeduplicationId(UUID.randomUUID().toString());
PublishResult response = snsClient.publish(request);

Notice how expensively it creates a new message deduplication ID: it literally creates a new UUID and uses that.

I wonder, do you have any cheaper ways for creating deduplication IDs ?

2

Maybe you can find something here atomic package - sync/atomic - pkg.go.dev

3

To easily generate unique IDs in Go, I use this very useful package:

If you need something orderable, maybe take a look into this snowflake ID implementation.

I hope this was somewhat helpful to you. :slight_smile:

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4

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