# Documentation of $slow variable

**URL:** <https://www.ruby-forum.com/t/documentation-of-slow-variable/177163>\
**Category:** NGINX\
**Created:** [October 12, 2009, 6:38pm UTC](https://www.ruby-forum.com/t/documentation-of-slow-variable/177163 "2009-10-12T18:38:22Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![William\_Dode](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/dfb087/32.png) [@William\_Dode](https://www.ruby-forum.com/u/William_Dode)\
**Post date:** [October 12, 2009, 6:38pm UTC](https://www.ruby-forum.com/t/documentation-of-slow-variable/177163/1 "2009-10-12T18:38:22Z")

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Hi,

Where can i find the documentation about the $slow variable ? I see it  
in lot of example, but cannot find the description…

I search for a way to don’t pass through proxy if the load of the system  
is high. Instead, i want to give a page “please come back later”

thx

---

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**Author:** ![William\_Dode](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/dfb087/32.png) [@William\_Dode](https://www.ruby-forum.com/u/William_Dode)\
**Post date:** [October 12, 2009, 7:46pm UTC](https://www.ruby-forum.com/t/documentation-of-slow-variable/177163/2 "2009-10-12T19:46:51Z")

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Hello!

On Mon, Oct 12, 2009 at 04:27:56PM +0000, William Dode wrote:

> Hi,
> 
> Where can i find the documentation about the $slow variable ? I see it  
> in lot of example, but cannot find the description…

There is no such standard variable in nginx.

Maxim D.

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<div class="post-metadata">

**Author:** ![William\_Dode](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/dfb087/32.png) [@William\_Dode](https://www.ruby-forum.com/u/William_Dode)\
**Post date:** [October 12, 2009, 8:12pm UTC](https://www.ruby-forum.com/t/documentation-of-slow-variable/177163/3 "2009-10-12T20:12:02Z")

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On Mon, Oct 12, 2009 at 04:27:56PM +0000, William Dode wrote:

> Hi,
> 
> Where can i find the documentation about the $slow variable ? I see it  
> in lot of example, but cannot find the description…
> 
> I search for a way to don’t pass through proxy if the load of the system  
> is high. Instead, i want to give a page “please come back later”

You saw probably a variable, created by the geo directive:

```
geo $slow {
    default 1;
    192.168.1.0/24 0;
    ...

```

You may call this variable what you will.

---

<div class="post-metadata">

**Author:** ![William\_Dode](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/dfb087/32.png) [@William\_Dode](https://www.ruby-forum.com/u/William_Dode)\
**Post date:** [October 12, 2009, 11:34pm UTC](https://www.ruby-forum.com/t/documentation-of-slow-variable/177163/4 "2009-10-12T23:34:37Z")

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On 12-10-2009, Igor S. wrote:

> You saw probably a variable, created by the geo directive:
> 
> ```
> geo $slow {
> default 1;
> 192.168.1.0/24 0;
> ...
> 
> ```
> 
> You may call this variable what you will.

I saw

if ($slow) {  
limit\_rate 10k;  
break;  
}

it’s why i thought it really mean something about slow !

thx