Maybe HAproxy can do that, it has some interesting routing options
It may be worth checking
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A 23 de junho de 2015 00:47:02 Ryan Schmidt <[email protected]>
escreveu:
On Jun 21, 2015, at 11:51 PM, Emerson Rocha Luiz wrote:
> How (if possible) to use node-cluster to schedule which worker will
respond to a request, based on type of request e.g. one worker for write
(POST/PUT/DELETE methods) and 1+ worker only for read (GET)?
>
> This is common on Load Balancing databases, where master server is for
Write, and slaves have a carbon copy of the master data and can serve much
faster, with less CPU usage and better query cache.
>
> On my NodeJS web service, I have a very fast read requests, even more
faster with varnish cache, but with a small and constant amount of write
requests, sometimes CPU intensive, lock entire thread by 0.1s~0.3s. In this
case, even if I just spawn the node application with both READ/WRITE
requests, I will still have the same problem, since each WRITE request will
slow down all process. This is why I suppose use the same strategy as some
databases could be a good idea.
>
> So, on this type of load balancing (workers scheduling policy based on
WRITE/READ request), is possible use node-cluster?
As far as I know, node's built-in cluster does not do anything like that.
It just passes incoming requests to an available worker. I don't know if
there is any way to influence which worker it uses.
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