[Haskell-cafe] Looking for architecture/infrastructure advice on coping with thousands of concurrent clients

[Carter Schonwald]

the courier package on hackage seems to strike a better balance vs CH
https://hackage.haskell.org/package/courier


On Wed, Jul 9, 2014 at 2:52 PM, Wojtek Narczyński <wojtek at power.com.pl>
wrote:

> On 09.07.2014 19:40, Isak Hansen wrote:
>
> Thousands of connections, your smartphone wouldn't handle, not to mention
> a server.
>
>
>  #1 - What's a good way to set up and maintain compressed and encrypted
>> connections from the clients to my cluster? I've been wanting to try out
>> websockets, think that'll do?
>>
>>
> http://caniuse.com/websockets - WebSockets browser compatibility, caveat
> emptor
>
>
>  #2 - I'm new to Haskell and would appreciate thoughts on how to store and
>> process game state. Imagine a plain application managing 1000 tables of
>> poker, responding to player input (that magically appears) and timer events
>> (e.g. folding players that fail to take action). What data structures and
>> libraries should I be looking at here? Thoughts on concurrency and how I
>> organize program flow?
>>
>>
> I would spawn a process for each game, and a process for each player.
>
>
>  #3 - I'm thinking of ZMQ to wire components together. Would I be better
>> off basing my cluster on Cloud Haskell or some other library for
>> distributed work?
>>
>>  Erlang/OTP is great, but I have a feeling that something was 'lost in
> translation' to Haskell, and that thing is simplicity. For example, I do
> not understand why such a small cabal package has been split into multiple
> tiny cabal packages. This is the fuel that cabal hell fire burns on.
> Despite this, I would give Cloud Haskell a try. If you don't you, will have
> to rediscover things like supervision hierarchy, not to mention timeouts as
> the first line of defense againtst all kinds of concurrency problems.
> Erlang/OTP really does get certain things right.
>
> --
> Kind regards,
> Wojtek N.
>
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