Virtual Workshops
Twice-monthly interactive sessions with our NoSQL solution architects.
Join Our Next Session >

High-Load Storage of Users’ Actions with Scylla and HDDs

13 minutes

Register for access to all 30 sessions available on demand.

Enter your email to watch this session from the Scylla Summit 2021 livestream. You’ll also get access to all available recordings.


The presentation gives a brief overview of the high-load service that stores users' actions. The given service is able to serve up to 240k writes per second in less than 2ms 95 percentile with just a few ScyllaDB nodes packed with HDDs. Hardware setup, cluster specification, live load numbers and latencies achieved are given. The problems we encountered with HDD setup are described along with the possible solutions to them.

Kirill Alekseev, Software Engineering Team Lead, Mail.Ru

Kirill is a software engineering team lead for the largest email service provider in Russia. Kirill graduated from Lomonosov Moscow State University with a Master’s Degree in Computer Science. He loves coding, music and parties.