Name: ⚡ Lightning Talk: Introducing ORCA: Load Balancing With Endpoint Provided Load Data - Misha Efimov, Google
Start: 2025-04-01T12:00:00+0100
End: 2025-04-01T12:10:00+0100

CNCF-hosted Co-located Events Europe 2025 taking place on 1 April. This event is happening in person at Excel London in London, England.

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Tuesday April 1, 2025 12:00 - 12:10 BST

Level 3 | ICC Capital Suite 2-4

Recent changes to Envoy provide a way to utilize load reports obtained from backends via Open Request Cost Aggregation (ORCA).

The initial implementation supports direct (inline) load reports from backends in the form of response headers and used in two different ways.
1. Load Reports are provided to the xDS control plane server via xDS LRS API.
2. Load reports are used by a new Client Side Weighted Round Robin load balancing policy to dynamically calculate host weights on the client side. Inline reporting enables sub second load balancing reaction times, a critical requirement for customers with coordinated and spiky traffic workloads.

Using these load reports, Envoy proxies are able to implement load balancing policies that vary endpoint load balancing weights according to backend load reports.
This talk discusses some high level changes that ORCA load reporting introduces as well as potential enhancements down the line.

Speakers

Misha Efimov

Staff Software Engineer, Google

Misha is a veteran software engineer with wide experience in application networking. Currently Misha is working on Envoy-based L7 application load balancers in Google Cloud. In the past Misha has created Cronet library which made modern protocols like HTTP/2 and HTTP/3 over QUIC... Read More →

Tuesday April 1, 2025 12:00 - 12:10 BST
Level 3 | ICC Capital Suite 2-4

EnvoyCon, Using and Integrating with Envoy (for both cloud native and legacy infrastructures)

Content Experience Level Intermediate
Event + Breaks EnvoyCon

CNCF-hosted Co-located Events Europe 2025

Misha Efimov

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