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From Jordan Zimmerman <jor...@jordanzimmerman.com>
Subject Re: Use zookeeper as Load Blancer
Date Thu, 16 May 2013 01:27:29 GMT
FYI Curator comes with a Service Discovery recipe. 

====================
Jordan Zimmerman

On May 15, 2013, at 6:23 PM, Neo Qing <neoqing@gmail.com> wrote:

> Hi,Germán Blanco:
>     Thanks for your detailed response, but my thought is little bit
> different compare with your point. Actually my thought is same as Bahman
> Kalali said, our service is based on ZooKeeper to implement a 'service
> discovery' service. Thanks for your suggestion, I'll keep that in my mind.
> 
> Neo
> 
> 
> On Thu, May 16, 2013 at 12:09 AM, German Blanco <
> german.blanco.blanco@gmail.com> wrote:
> 
>> Hello Neo Qing,
>> 
>> I am not the best expert, but I will try to help.
>> I understand that you want to have a ZooKeeper client connected to a
>> cluster and you wonder if there will be fail over and load balancing for
>> the requests coming from that client. If I didn't get the question right,
>> please correct me.
>> If I am not wrong, if the ZooKeeper client loses its connection it will try
>> to reconnect to any of the servers that are indicated when you create the
>> ZooKeeper object, so there will be fail over. Of course, that will mean a
>> new connection. Some failures in the servers can be handled without the
>> client losing its connection, e.g. when a server other than the one you are
>> connected to goes down but there is still a quorum in the cluster.
>> Load Balancing for ZooKeeper write requests coming from clients wouldn't
>> help because all request need to go through the leader. Load Balancing of
>> read request could be achieved if the ZooKeeper clients connections are
>> balanced between the servers of the cluster, but not for a single client
>> connection.
>> 
>> I hope that helps. Anybody, please correct me if I got anything wrong.
>> Cheers,
>> 
>> Germán Blanco.
>> 
>> 
>> 
>> On Wed, May 15, 2013 at 7:26 AM, Neo Qing <neoqing@gmail.com> wrote:
>> 
>>> Hi,There
>>>  I'm new to zookeeper, currently I'm working on a project, I have a
>>> cluster of server, client need to connection server (TCP/IP), and we need
>>> to keep the connection long live.
>>>  To do the fail over and load balance , I was wondering whether
>> zookeeper
>>> can handle this case, especially for long live connection.
>>>  thanks in advance.
>>> 
>>> Neo
>> 

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