> For the complete documentation index, see [llms.txt](https://book.ferro.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.ferro.pro/cloud/cf.md).
# cf
* [Network ports](#network-ports)
* [Rules](#rules)
* [SSL/TLS](#ssltls)
* [SSL Modes](#ssl-modes)
* [Edge Certificates](#edge-certificates)
* [Origin CA](#origin-ca)
* [CNAME Flattening](#cname-flattening)
* [Workers](#workers)
* [TypeScript](#typescript)
* [Wrangler (Workers CLI)](#wrangler-workers-cli)
* [Workers as Reverse Proxy](#workers-as-reverse-proxy)
* [Bulk origin override](#bulk-origin-override)
* [Reflare](#reflare)
* [Storage](#storage)
* [R2 - S3 object](#r2---s3-object)
* [KV - key-value](#kv---key-value)
* [D1 - RDB](#d1---rdb)
* [Durable Objects - Workers Paid plan](#durable-objects---workers-paid-plan)
* [Queues - Workers Paid plan](#queues---workers-paid-plan)
* [Paid](#paid)
## Network ports
HTTP: 80 8080 | No caching: 8880 2052 2082 2086 2095\
HTTPS: 443 | No caching: 2053 2083 2087 2096 8443
## Rules
Settings - URL normalization:
* [order](https://developers.cloudflare.com/rules/configuration-rules/#execution-order): Origin -> Cache -> Conf -> Single -> Page
| Name | Free | Desc |
| --------------------------------------------------------------------------------------------------- | ------- | ----------------------------------------------------------------------------------------------------------- |
| [Transform Rules](https://developers.cloudflare.com/rules/transform/) | free 10 | no Regex support |
| [Origin Rules](https://developers.cloudflare.com/rules/origin-rules/) | 10 | Override destination port |
| [Cache Rules](https://developers.cloudflare.com/cache/about/cache-rules/) | 10 | cache properties of your HTTP requests |
| [Configuration Rules](https://developers.cloudflare.com/rules/configuration-rules/) | 10 | [expressions](https://developers.cloudflare.com/firewall/cf-dashboard/edit-expressions/) / no Regex support |
| [Single Redirects](https://developers.cloudflare.com/rules/url-forwarding/bulk-redirects/concepts/) | 5\~20 | |
| [Page Rules](https://support.cloudflare.com/hc/en-us/articles/218411427) | 3 | require a "proxied" DNS record, highest priority rule at the top |
## SSL/TLS
### SSL Modes
```
Flexible: visitor - Edge cert - cf
Full: cf - self signed certificate - server
Full (strict): cf - trusted CA - server
```
### Edge Certificates
[Automatic HTTPS Rewrites](https://support.cloudflare.com/hc/en-us/articles/227227647) safely eliminates **mixed content** issues by rewriting insecure URLs dynamically from known secure hosts to their secure counterpart.
[Page Rules - Always Use HTTPS](https://support.cloudflare.com/hc/en-us/articles/218411427#https)
[Page Rules - Forwarding URL](https://support.cloudflare.com/hc/en-us/articles/200170536)
### Origin CA
15-years wildcard | visitor - Edge cert - cf - Origin CA - server：
```
PEM: Apache httpd and NGINX
PKCS#7: Microsoft’s IIS or Apache Tomcat
```
## CNAME Flattening
* CNAME records normally can not be on the zone apex. We use CNAME flattening to make it possible.
* DNS/Settings
* speeds up CNAME resolution
* CNAME flattening occurs by default
## Workers
* Free Limits:
* Examples:
* Create site:
* Cron:
* KV:
### TypeScript
```
npm init cloudflare my-project worker-typescript
```
* Pages:
### Wrangler (Workers CLI)
```
npm install -g wrangler # nodejs v16.13.0+
wrangler login # install volta/nvm if error
wrangler whoami # view permissions
wrangler init && cd
```
`wrangler generate [name] [template]`:
```
npm start # [l] turn on/off local mode
npm test
npm run deploy || wrangler publish # 1st time: wait 1min
```
Workers > Overview # re-login web if no menu
* Online dev: worker page > click `Quick edit`
`wrangler dev`:
`wrangler tail --format=pretty`:
## Workers as Reverse Proxy
### Bulk origin override
### Reflare
```
npm init cloudflare reflare-app https://github.com/xiaoyang-sde/reflare-template
```
## Storage
### R2 - S3 object
| Product | Free | Paid - Rates |
| ------------------ | --------------------------- | ------------------------ |
| Storage | 10 GB / month | $0.015 / GB-month |
| Class A Operations | 1 million requests / month | $4.50 / million requests |
| Class B Operations | 10 million requests / month | $0.36 / million requests |
### KV - key-value
1 GB free:
Value size 25MB / 100,000 reads per day:
### D1 - RDB
* only be charged for base storage plus any database operations performed
### Durable Objects - Workers Paid plan
### Queues - Workers Paid plan
job queueing, batching and inter-Service (Worker to Worker) communication.
## Paid
| Product | Fee | Desc |
| -------------------------------------------------------------------------------- | ---------- | ---------------------------------------------------------------------- |
| [Workers Paid plan](https://developers.cloudflare.com/workers/platform/pricing/) | $5 / month | separate from any other Cloudflare plan (Free, Professional, Business) |
| Images | $5 / month | Store, resize, optimize and serve images at scale |
| Stream | $5 / month | Live and on-demand video streaming in minutes |
## Community
domain:
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://book.ferro.pro/cloud/cf.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.