Eliminating Cold Starts 2: shard and conquer
2025-09-26
We reduced Cloudflare Workers cold starts by 10x by optimistically routing to servers with already-loaded Workers. Learn how we did it here....
Continue reading »
HTTP Analytics for 6M requests per second using ClickHouse
2018-03-06
One of our large scale data infrastructure challenges here at Cloudflare is around providing HTTP traffic analytics to our customers. HTTP Analytics is available to all our customers via two options:...
How Cloudflare analyzes 1M DNS queries per second
2017-05-10
On Friday, we announced DNS analytics for all Cloudflare customers. Because of our scale –– by the time you’ve finished reading this, Cloudflare DNS will have handled millions of DNS queries –– we had to be creative in our implementation. ...
Introducing lua-capnproto: better serialization in Lua
2014-02-28
When we need to transfer data from one program to another program, either within a machine or from one data center to another some form of serialization is needed....
