[erlang-questions] What are the cons and pros of using Erlang rather than java to develop server backend?

[Michael Truog]

A solution using the JVM seems like it would lack scalability because of
the better process scheduling in the Erlang VM with message passing. 
Most people may not need to scale to a large system, so the JVM may be
all that they require.  So to have a definitive answer you would really
need to benchmark the scalability of message passing with JVM
concurrency.  However, I think it is generally understood that the JVM
is limited by its broad scope, in ways that the Erlang VM is not.

Fred Hebert (MononcQc) wrote:
> On Fri, May 22, 2009 at 2:04 PM, Steve Davis <steven.charles.davis@REDACTED
>   
>> wrote:
>>     
>
>   
>> I could not agree more with Joe's comment about non-functional being
>> basically ignored for much too long during development!
>>
>> However, I'm kind of intrigued as to what answers to the questions
>> posed would in practice yield an answer *other than* Erlang/OTP?
>>
>> The only one that works for me is: "I'm being forced to use framework
>> 'X' against my better technical judgement"
>>
>> I'd be interested in what others think about this.
>>
>> /s
>> (yep, I'm still drinking the Kool-Aid, and seeing no reason as yet to
>> stop :))
>>
>>
>> On May 22, 9:17 am, Joe Armstrong <erl...@REDACTED> wrote:
>>     
>>> You have to tell us more about your problem in order to get sensible
>>> feedback. So far you have said...
>>>       
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>>     
>
> Well, as has been mentioned, you could go with clojure and terracotta for
> the JVM; Clojure is a lisp-variant without destructive updates and comes
> with transactional memory built-in; it's thus functional, benefits from a
> two-way communication system with the java libraries, can be good at
> concurrency. Terracotta would let you distribute the code with relatively
> enough ease too.
>
> Hot code swapping can be substituted by updating nodes one by one and a good
> switching system; with enough isolation, the update becomes transparent and
> requires no downtime at all, while forcing you to keep redundancy in mind.
>
> It's certainly more complicated to set up as a distributed environment, but
> it's a completely acceptable alternative, especially for the libs and the
> lisp macro system.
>
>   
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