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Running HAproxy for Neo4J in HA mode
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abhijith K  
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 More options Oct 12 2012, 8:02 am
From: abhijith K <abhijith....@gmail.com>
Date: Fri, 12 Oct 2012 05:02:26 -0700 (PDT)
Local: Fri, Oct 12 2012 8:02 am
Subject: Running HAproxy for Neo4J in HA mode
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Hi All,
                I was able to setup Neo4J in HA mode on 3 machines. I
wanted to have HAproxy as a front-end.

Could you please answer the below questions:
1. When we run HAProxy, will all the transactions for all 3 Neo4j
instances, go through HAProxy ?
      If yes, How exactly can I interact with Neo4j ? Am I suppose to talk
to HAproxy which indirectly forwards the request to low-load Neo4J server ?
2. Is there a way we can interact with Neo4J DB in embedded mode ? with HA
Proxy running ?
3. How to talk to specific Neo4J server (Slave) for read-only purpose ?

Thanks a lot in advance.

Regards,
Abhijith K


 
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David Montag  
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 More options Oct 12 2012, 1:06 pm
From: David Montag <david.mon...@neotechnology.com>
Date: Fri, 12 Oct 2012 10:06:35 -0700
Local: Fri, Oct 12 2012 1:06 pm
Subject: Re: [Neo4j] Running HAproxy for Neo4J in HA mode
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Hi Abhijith,

Did you check out the HAProxy tutorial in our documentation? See
http://docs.neo4j.org/chunked/snapshot/ha-haproxy.html for more info.

To address your questions:

1. All traffic will typically go through HAProxy. HAProxy can be configured
in a number of ways so that it routes your traffic optimally.

2. HAProxy does HTTP load balancing and distribution of requests. If you
run Neo4j embedded, then you must expose your embedded operations over HTTP
in order to access them remotely. This is typically done by hosting your
embedded instance in a Tomcat.

3. Can you please be more specific on this one? Do you want to send a
request and guarantee that it's read-only?

Thanks,
David

--
David Montag <david.mon...@neotechnology.com>
Neo Technology, www.neotechnology.com
Cell: 650.556.4411
Skype: ddmontag

As a friend of Neo, register for GraphConnect
<http://www.graphconnect.com>and get a 20% discount. Code: GCFON


 
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abhijith K  
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 More options Oct 12 2012, 11:28 pm
From: abhijith K <abhijith....@gmail.com>
Date: Fri, 12 Oct 2012 20:28:16 -0700 (PDT)
Local: Fri, Oct 12 2012 11:28 pm
Subject: Re: [Neo4j] Running HAproxy for Neo4J in HA mode
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Thanks a lot again, Dave . I will othrough the HAproxy doc and will get
back.

Regards,
Abhijith K


 
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