Skip to content

Add least time load balancing strategy #12167

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom
Merged
traefiker merged 18 commits into from
Oct 23, 2025
Merged

Add least time load balancing strategy #12167

traefiker merged 18 commits into from
Oct 23, 2025

Conversation

@sdelicata
Copy link
Contributor

@sdelicata sdelicata commented Oct 17, 2025

What does this PR do?

Adds a new leasttime load balancing strategy that selects backend servers based on average response time (TTFB) and active connection count, weighted by server capacity.

Motivation

Traefik's existing strategies (WRR, P2C, HRW) don't consider response time/latency as a selection criterion.
The leasttime strategy routes traffic to the fastest-responding servers while maintaining fair load distribution.
It is particularly interesting when:

  • Backend servers have heterogeneous performance (different hardware, locations, or load)
  • Servers experience performance degradation (sustained load, network latency changes)
  • Multi-datacenter deployments with varying RTT

More

  • Added/updated tests
  • Added/updated documentation

lbenguigui
lbenguigui reviewed Oct 17, 2025
View reviewed changes
@rtribotte rtribotte added this to the next milestone Oct 20, 2025
@rtribotte rtribotte force-pushed the feat/least-time-load-balancing branch from 60c9489 to 6cde5ba Compare October 22, 2025 12:46
@kevinpollet kevinpollet changed the title feat: least time load balancing strategy Add least time load balancing strategy Oct 22, 2025
rtribotte
rtribotte approved these changes Oct 23, 2025
View reviewed changes
Copy link
Member

@rtribotte rtribotte left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

LGTM

@traefiker
Copy link
Contributor

traefiker commented Oct 23, 2025

🚫 checks status: PR status: cancelled

@kevinpollet kevinpollet force-pushed the feat/least-time-load-balancing branch from 13a2c15 to a8da5aa Compare October 23, 2025 08:05
@rtribotte rtribotte force-pushed the feat/least-time-load-balancing branch from 14ca1be to 6efb9d0 Compare October 23, 2025 09:54
@traefiker
Copy link
Contributor

traefiker commented Oct 23, 2025

🚫 checks status: PR status: cancelled

@rtribotte rtribotte force-pushed the feat/least-time-load-balancing branch from 6efb9d0 to 1b42eaa Compare October 23, 2025 13:53
@traefiker traefiker merged commit a754236 into traefik:master Oct 23, 2025
59 of 65 checks passed
@bpsoraggi bpsoraggi mentioned this pull request Nov 5, 2025
Closed
2 tasks
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Reviewers

@lbenguigui lbenguigui lbenguigui left review comments

@kevinpollet kevinpollet kevinpollet approved these changes

@rtribotte rtribotte rtribotte approved these changes

Assignees

No one assigned

Labels

area/provider/file area/provider/k8s/crd area/service kind/enhancement a new or improved feature. size/L

Projects

None yet

Milestone

3.6

Development

Successfully merging this pull request may close these issues.

5 participants

@sdelicata @traefiker @kevinpollet @rtribotte @lbenguigui