lecture · 2:44 · 0 checkpoints · browser voice

Discord moved trillions of messages in days, not months

Name: Discord moved trillions of messages in days, not months
Uploaded: 2026-10-29T11:41:12.000Z
Duration: 2 min 50 s
Channel: Himanshu Kukreja
Description: How Discord planned for years, put a Rust layer in front of its database, then rewrote its copy tool so trillions of messages could move from Cassandra to ScyllaDB in days, not months, and switch over all at once.

How Discord planned for years, put a Rust layer in front of its database, then rewrote its copy tool so trillions of messages could move from Cassandra to ScyllaDB in days, not months, and switch over all at once.

01 · Days, not months

Trillions of messages. Days, not months.

Trillions of messages, in days

Discord copied trillions of messages to a new database.