CNCF-hosted Co-located Events Europe 2025 taking place on 1 April. This event is happening in person at Excel Londonin London, England. The Sched app allows you to build your schedule, but is not a substitute for your event registration. You must be registered for KubeCon + CloudNativeCon Europe 2025, and have an All-Access pass in order to participate in the sessions.
To view the full event schedule for a specific CNCF-hosted Co-located event, you can use the right-hand navigation bar to sort and filter.
Envoy has great support for rate limiting, but as you scale up you’ll undoubtedly face serious cost and operational challenges.
Envoy’s global rate-limiting makes decisions on the request hot path, leading to an unavoidable latency increase, and a linear increase in requests to your rate limiting cluster. Spotify had noticed that the cost of running the rate limiting cluster was roughly equivalent to running the Envoys themselves!
Spotify addressed these scaling challenges by writing a new distributed Envoy rate limiter, and did so as an Envoy filter written in golang, and a backing Java service.
Do you have similar challenges? Learn about why Spotify chose to develop a new rate limiting approach, how the approach scales to meet Spotify’s needs, and the experience of writing a non-trivial filter in golang.
