Language Bindings for Erlang Again (Opinion)

Ulf Wiger <>
Wed Jun 7 21:31:02 CEST 2006


Den 2006-06-06 19:42:17 skrev Garry Hodgson <>:

>> Erlang runs the telephone system in the UK - all 1.7m sloc of it with  
>> 31ms
>> downtime per year (yes 99.9999999% availability).
>>
>> The lesson of this is that Erlang 'only' gives you commodity,  
>> open-source,
>> google scalability on comodity hardware. Apart from that it has little  
>> to
>> offer ;->
> does anyone have a pointer to some documentation about that?
> i'd like to beat some people over the head with it.


It is true that the availability figures were nine nines during the first  
period of operation. It was pretty exciting, since when it was taken into  
service, it was the first network of its kind, and it was a live cutover  
in one of the busiest transit networks in the world. I don't know what the  
availability figures are today. As you may know, the biggest contributors  
to downtime in telecom systems are maintenance and upgrades.

There were some articles, but I don't know if they are still reachable.  
Here's a post that quotes some of the contents of one article long since  
lost.

http://www.erlang.org/ml-archive/erlang-questions/200211/msg00050.html


Here's the original article on the AXD 301:
http://web.archive.org/web/20020605062622/http://www.ericsson.com/about/publications/review/1998_01/files/1998012.pdf

It does mention (in the "software technology" box on page 15) that Erlang  
is the primary language used for the control system.

BR,
Ulf W
-- 
Ulf Wiger



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