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Pavel Movchan x0st

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@Visya
Visya / index.MD
Created November 4, 2020 11:55
Implementing message versioning for SNS/SQS pattern

Versioning in SNS messages

Message versioning can be required in SNS+SQS patternto allow setting up specific consumers that can process newer versions and make version transitions smooth and painless.

To achieve that you can use the native AWS SNS filtering mechanism. It allows to set version message attribute on a message sent to SNS and filter which queues receive which versions of messages.

Example of versioned message

@jboner
jboner / latency.txt
Last active June 21, 2024 17:41
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD