[pro] How to interact with a running lisp instance?

[Peter Seibel]

Presumably this kind of thing is the reason for the Chaos Monkey:

  http://www.readwriteweb.com/cloud/2010/12/chaos-monkey-how-netflix-uses.php

-Peter

On Mon, Dec 20, 2010 at 6:37 PM, Scott L. Burson <Scott at sympoiesis.com> wrote:
> On Fri, Dec 17, 2010 at 11:16 AM, Ryan Davis <ryan at acceleration.net> wrote:
>> We do something like this.  For lisp websites my company makes, we have
>> a password-protected admin section with some light UI to help us manage
>> the site (turn logging levels up/down, clear caches, etc), and one of
>> those tools is a "evaluate this code in the running lisp" textarea, with
>> a dropdown to select what package it runs in.  This is very rarely used
>> to patch the site in emergency situations or for trivial changes where
>> we don't want to bring down the site.  This has bit us a few times,
>> where we fixed a small bug directly in the running lisp and then forgot
>> to publish the new code and had mystery regressions when the lisp
>> process was restarted.
>
> A really funny cautionary tale about this sort of thing:
>
>  http://thedailywtf.com/Articles/Designed-For-Reliability.aspx
>
> -- Scott
>
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-- 
Peter Seibel
http://www.codequarterly.com/