---
description: In Orange-to-Orange (O2O) setups — where a SaaS provider uses Cloudflare for SaaS and their customer also has their own Cloudflare zone — the __cf_bm Bot Management cookie returned from the origin-facing Cloudflare zone can cause the eyeball-facing zone to bypass cache. This occurs because the Set-Cookie header in the response triggers Cloudflare's default behavior of not caching responses with Set-Cookie.
title: Bot Management cookie causes cache bypass in O2O setups
image: https://developers.cloudflare.com/og-docs.png
---

[Skip to content](#main-content)

> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/cache/llms.txt  
> Use this file to discover all available pages before exploring further.

# Bot Management cookie causes cache bypass in O2O setups

Last updated Jun 30, 2026|Copy as Markdown|[View as Markdown](https://developers.cloudflare.com/cache/troubleshooting/bot-management-o2o-cache-bypass/index.md)|[Agent setup](https://developers.cloudflare.com/agent-setup/)

In [Orange-to-Orange (O2O)](https://developers.cloudflare.com/cloudflare-for-platforms/cloudflare-for-saas/saas-customers/how-it-works/) setups — where a SaaS provider uses [Cloudflare for SaaS](https://developers.cloudflare.com/cloudflare-for-platforms/cloudflare-for-saas/) and their customer also has their own Cloudflare zone — the `__cf_bm` Bot Management cookie returned from the origin-facing Cloudflare zone can cause the eyeball-facing zone to bypass cache. This occurs because the `Set-Cookie` header in the response triggers Cloudflare's default behavior of not caching responses with `Set-Cookie`.

If you are seeing unexpectedly low cache hit rates in an O2O setup with Bot Management enabled, this may be the cause.

Was this helpful?

YesNo

## On this page

[![](https://developers.cloudflare.com/_astro/logo.te5VL_aD.svg)Docs](https://developers.cloudflare.com/)

```json
{"@context":"https://schema.org","@type":"TechArticle","@id":"https://developers.cloudflare.com/cache/troubleshooting/bot-management-o2o-cache-bypass/#page","headline":"Bot Management cookie causes cache bypass in O2O setups · Cloudflare Cache (CDN) docs","description":"In Orange-to-Orange (O2O) setups — where a SaaS provider uses Cloudflare for SaaS and their customer also has their own Cloudflare zone — the __cf_bm Bot Management cookie returned from the origin-facing Cloudflare zone can cause the eyeball-facing zone to bypass cache. This occurs because the Set-Cookie header in the response triggers Cloudflare's default behavior of not caching responses with Set-Cookie.","url":"https://developers.cloudflare.com/cache/troubleshooting/bot-management-o2o-cache-bypass/","inLanguage":"en","image":"https://developers.cloudflare.com/og-docs.png","dateModified":"2026-06-30","publisher":{"@type":"Organization","name":"Cloudflare","url":"https://www.cloudflare.com/"},"isPartOf":{"@type":"WebSite","@id":"https://developers.cloudflare.com/#website","name":"Cloudflare Docs","url":"https://developers.cloudflare.com/"}}
```