[Server-devel] Squid caching on the XSCE AND AP's

[Anish Mangal]

On Sat, Sep 14, 2013 at 7:08 PM, Samuel Greenfeld <greenfeld at laptop.org>wrote:

> Unless there are clients that are going though the router but are not
> going through the schoolserver, I think this risks more harm than good.
>
>
The reason this can be useful is not for internet browsing, but for the
tons of GB of content (videos, maps, wikipedia) stored locally on the XS.


> Going back to the microprocessor analogy, the Level 2 cache usually is
> much larger than the Level 1 cache, and only slightly slower.  Most
> community routers using USB sticks will be much slower than a schoolserver,
> and will not have the RAM to cache anywhere close to the same number of
> files in memory as the schoolserver, or the storage space of a hard drive.
>
>
>
The analogy doesn't run very well, as the AP is serving 20 users while the
XS could be serving 200 or more.


>
>
> On Sat, Sep 14, 2013 at 9:31 PM, Anish Mangal <anish at activitycentral.com>wrote:
>
>> Hi,
>>
>> I think it was Tony (please correct me if I'm wrong) who pointed out that
>> network capacity in a School Server setup can be a hindrance (esp
>> considering 200 kids, and 20 kids per AP).
>>
>> This weekend, I attempted to run squid on a TP-Link router. I used a USB
>> drive as a storage medium, and flashed the router with the OpenWRT SECN
>> firmware. The initial results seem quite promising, and I'm going to
>> explore this a bit further.
>>
>> If anyone's interested in hacking on this or has thoughts/feedback,
>> please chip in :-)
>>
>> Drawing a "microprocessor" analogy, having a L1 cache on the XSCE and an
>> L2 cache on the AP, and some smart fine tuning, we could potentially make
>> much more efficient use of the network capacity we have.
>>
>> This can be REALLY advantageous if someone is planning to use the SECN
>> firmware in the mesh mode (no ethernet cables whatsoever). The AP's
>> wouldn't have to talk to each other as often, if they all have small cache
>> memories embedded in them.
>>
>> Cheers,
>> Anish
>>
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>>
>>
>
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