How Discord Stores Billions of Messages (2017)

Re:How Discord Stores Billions of Messages (2017) by greenbeans1991 on Tuesday August 24, 2021 @09:47PM (#28297231)

Could somebody help me understand the reasoning behind

`timestamp = snowflake_id >> 22`

Thanks :)

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Re:How Discord Stores Billions of Messages (2017) by karmanyaahm on Tuesday August 24, 2021 @10:10PM (#28297343)

IIRC a snowflake ID's first few bits (or characters?) are by definition a unix timestamp.

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Re:How Discord Stores Billions of Messages (2017) by greenbeans1991 on Tuesday August 24, 2021 @10:26PM (#28297420)

Ah it gets rid of the non-time related bits. Below is a description of the formatting

* id is composed of: * time - 41 bits (millisecond precision w/ a custom epoch gives us 69 years) * configured machine id - 10 bits - gives us up to 1024 machines * sequence number - 12 bits - rolls over every 4096 per machine (with protection to avoid rollover in the same ms)

thanks :)

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