# facebook/rebalancer

> A C++ library with Python bindings for specifying and solving large-scale assignment problems, such as distributing objects (shards, tasks) across containers (hosts) under constraints and objectives.

- Magnitude: 4.2 out of 10 — Early signal
- Stars: 346 total · +2 stars measured 2026-10-08, 10:59–11:47 UTC, ≈ 27 by evening
- Star trust: star growth looks organic
- Category: DevOps & infrastructure · Language: C++ · License: Apache-2.0 · Created: 2026-06-10 · Last push: 2026-10-08
- GitHub: https://github.com/facebook/rebalancer · Homepage: https://facebook.github.io/rebalancer/ · Page: https://gitnova.dev/en/r/facebook/rebalancer

## Useful for

- Balance shards across hosts by CPU utilization using local search instead of manual placement.
- Enforce memory capacity constraints when migrating tasks between servers.
- Solve small placement problems optimally with the HiGHS MIP solver via the Python API.

## Why it’s here

- Star-counter measurements on 2026-10-08 (UTC), 10:59–11:47: 344 → 346 stars (+2). This is the change over that interval.
- Estimated end-of-day forecast: about +27 stars, using observed gains and the previous day.
- Before this, the repository barely got any stars — about 3 per day.
- Elevated gains were measured on the last 2 completed UTC days in a row. Continued growth is not guaranteed.
- GitHub Trending C++ today: #3, +84 stars.
- About 14 forks a day — people are taking the code.

## Star trust

Star growth looks organic.

Star-trust labels are heuristics based on the repository’s behavior, not a check of every stargazer.

## Numbers

- Forks: 35
- Issues and pull requests: 64
- Watchers: 0
- Average over the last week: 44 per day
- Usual pace: 2 per day
- Stars in the last hour (measured): 0
- Latest release: v1.0.4 (2026-07-07)

## Stars per day, last 30 days (oldest → newest, today is partial)

2026-09-09 … 2026-10-08: 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 6, 5, 1, 1, 1, 0, 14, 0, 1, 1, 3, 0, 0, 7, 170, 97, 2

## Spotted in now

- GitHub Trending C++ today: #3, +84 stars

## Similar by description

1. **google/or-tools** — 1.1 · Steady · Science & research · C++ · +4 stars measured 2026-10-08, 00:11–11:57 UTC, ≈ 6 by evening
   Open-source suite by Google for solving combinatorial optimization problems: constraint programming, linear programming, routing and graph algorithms. Includes C++ core with Python, C# and Java wrappers.
   Full card: https://gitnova.dev/en/r/google/or-tools.md

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Magnitude (0–10) measures how fast and how unusually interest in a repository is growing right now. It is not a quality score.
Days are UTC. “So far today” is a fact; “expected by the end of the day” is a forecast.
Summaries and use cases are written by an LLM (DeepSeek V4.1 Flash) from the README and may be inaccurate: verify specific claims (benchmarks, speed, hardware) in the repository itself.
Data as of 2026-10-08 12:00 UTC, updated every 30 minutes.