1 TRILLION messages #javascript #python #web #coding #programming

ever wonder how Discord manages to store

a trillion messages their scaling

journey is impressive it started small

in 2015 using DB to store 100

million messages but as user base

exploded Discord became unstable in 2017

they moved to Cassandra things were okay

for a while but then Mega popular

Channel started overloading individual

notes slowing everything down the

solution came when Discord migrated to

Zilla DB if is written in C++ instead of

java it eliminated expensive garbage

collection paes also great is a sh per

cor design each CPU isolates the channel

partitions it handles so a viral channel

can the whole Fleet this C also

build a rust space service in between to

D duplicate requests this protects the

DB under heavy loads the results latency

dropped from 125 milliseconds to 15

milliseconds on average