---
description: Use hash_in_range() in HTTP Ruleset Engine expressions to select a portion of requests.
title: hash_in_range() is globally available for HTTP products
image: https://developers.cloudflare.com/changelog/post/2026-10-02-hash-in-range-ga/og.png?v=f5c092ebf0412ae3
---

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October 2, 2026

## hash\_in\_range() is globally available for HTTP products

[Rules](https://developers.cloudflare.com/rules/)

Copy as Markdown| [View as Markdown](https://developers.cloudflare.com/changelog/post/2026-10-02-hash-in-range-ga/index.md)| [Agent setup](https://developers.cloudflare.com/agent-setup/)

`hash_in_range()` is globally available for HTTP products on all plans. It hashes fields into an integer within a specified range. Use this result to select a portion of requests.

Use `cf.random_seed` to select approximately 10% of requests at random:

```txt
hash_in_range(0, 100, cf.random_seed) < 10
```

With Cloudflare for SaaS, use [custom metadata](https://developers.cloudflare.com/cloudflare-for-platforms/cloudflare-for-saas/domain-support/custom-metadata/) to control rollout progression. Define `rollout_pct` as a custom key for each hostname. Set its value to an integer from 0 to 100. The expression selects approximately that percentage of requests:

```txt
hash_in_range(0, 100, cf.random_seed) < coalesce(lookup_json_integer(cf.hostname.metadata, "rollout_pct"), 0)
```

If `rollout_pct` is missing, `coalesce()` supplies `0`. The rule then matches no requests.

For details, refer to the [`hash_in_range()` function reference](https://developers.cloudflare.com/ruleset-engine/rules-language/functions/#hash_in_range).

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