How we scaled ingestion to one million rows per second

Scaling ingestion throughput is a common requirement when using CrateDB. To gain first-hand practical experience on what challenges one can meet on the way, we set ourselves a goal: Find a realistic use case, start with a single node, and scale it until reaching a throughput of one million rows per second.

To find out what we learned, visit our latest blog post:


We have updated the blog post with more recent numbers, reflecting the latest developments in all components used as part of the benchmarks.

What has changed in the setup?

  • CrateDB version: Updated from 4.7 to 5.4

    There have been substantial improvements in ingest performance in CrateDB 5.3.

  • EC2 instance type: Switched from m6g.4xlarge (ARM) to m6in.4xlarge (x64)

    Mainly due to architecture restrictions in 3rd party monitoring tools, but m6in instances also provide higher network throughput beneficial for node-to-node communication.

    The number of CPUs and amount of RAM remained identical.

  • Operating system: Updated from Amazon Linux 2 to Amazon Linux 2023

What changed in the results?

  • 1 million records per second throughput is now achieved with five nodes instead of ten
  • On scaling, the observed overhead factor was reduced from 25% to 20%
  • Measurements including the usage of replicas have been added