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From: Thorvaldsson Justus <justus.thorvaldsson@svenskaspel.se>
To: "'user@cassandra.apache.org'" <user@cassandra.apache.org>
Date: Mon, 16 Aug 2010 14:36:06 +0200
Subject: SV: The entry of Cassandra
Thread-Topic: The entry of Cassandra
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http://wiki.apache.org/cassandra/ClientOptions

but I prefer writing my own code, trying to write something simple API work=
ing with 0.7.0beta1 amt though am I the only one that thinks NOT using clie=
nts like hector is simpler (in a way, to feel in control at least)?

Fr=E5n: Ying Tang [mailto:ivytang0812@gmail.com]
Skickat: den 16 augusti 2010 14:31
Till: user@cassandra.apache.org
=C4mne: Re: The entry of Cassandra

Could you just recommond some  higher lever libraries?
On Mon, Aug 16, 2010 at 6:25 PM, Ran Tavory <rantav@gmail.com<mailto:rantav=
@gmail.com>> wrote:
The common practice is to connect to a few hosts and send request in round =
robin or other lb tactic. The hosts are symmetric so any host will do.
There are also higher lever libraries that help with that as well as connec=
tion pooling and other goodies

On Mon, Aug 16, 2010 at 1:14 PM, Ying Tang <ivytang0812@gmail.com<mailto:iv=
ytang0812@gmail.com>> wrote:
   After reading the docs and the  thrift demo , i found that if the demo ,=
if we want to connect to the database , we must  first do  "TTransport tr =
=3D new TSocket("localhost", 9160) " .
   Then  we operate on the database through this TTransport .
   But this operation assigns a fixed IP , so all requests would transforme=
d to this IP . And the cassandra node of this ip would load a heavy reading=
 load and proxy load .

   Do i understand this wrong , or cassandra client has other way to access=
 cassandra and doesn't need to assign a fixed IP?



--
Best regards,

Ivy Tang






--
Best regards,

Ivy Tang







--
Best regards,

Ivy Tang




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<div class=3DWordSection1>

<p class=3DMsoNormal><a href=3D"http://wiki.apache.org/cassandra/ClientOpti=
ons">http://wiki.apache.org/cassandra/ClientOptions</a><o:p></o:p></p>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal><span lang=3DEN-US>but I prefer writing my own code, t=
rying to
write something simple API working with 0.7.0beta1 amt though am I the only=
 one
that thinks NOT using clients like hector is simpler (in a way, to feel in =
control
at least)?<o:p></o:p></span></p>

<p class=3DMsoNormal><span lang=3DEN-US style=3D'font-size:11.0pt;font-fami=
ly:"Calibri","sans-serif";
color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<div style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm'>

<p class=3DMsoNormal><b><span style=3D'font-size:10.0pt;font-family:"Tahoma=
","sans-serif"'>Fr=E5n:</span></b><span
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Ying Tang
[mailto:ivytang0812@gmail.com] <br>
<b>Skickat:</b> den 16 augusti 2010 14:31<br>
<b>Till:</b> user@cassandra.apache.org<br>
<b>=C4mne:</b> Re: The entry of Cassandra<o:p></o:p></span></p>

</div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

<p class=3DMsoNormal style=3D'margin-bottom:12.0pt'>Could you just recommon=
d
some&nbsp;&nbsp;higher lever libraries?<o:p></o:p></p>

<div>

<p class=3DMsoNormal>On Mon, Aug 16, 2010 at 6:25 PM, Ran Tavory &lt;<a
href=3D"mailto:rantav@gmail.com">rantav@gmail.com</a>&gt; wrote:<o:p></o:p>=
</p>

<div>

<p class=3DMsoNormal>The common practice is to connect to a few hosts and s=
end
request in round robin or other lb tactic. The hosts are&nbsp;symmetric&nbs=
p;so
any host will do.<o:p></o:p></p>

<div>

<p class=3DMsoNormal>There are also higher lever libraries that help with t=
hat as
well as connection pooling and other goodies<o:p></o:p></p>

<div>

<div>

<p class=3DMsoNormal style=3D'margin-bottom:12.0pt'><o:p>&nbsp;</o:p></p>

<div>

<p class=3DMsoNormal>On Mon, Aug 16, 2010 at 1:14 PM, Ying Tang &lt;<a
href=3D"mailto:ivytang0812@gmail.com" target=3D"_blank">ivytang0812@gmail.c=
om</a>&gt;
wrote:<o:p></o:p></p>

<div>

<p class=3DMsoNormal>&nbsp;&nbsp; After reading the docs and the &nbsp;thri=
ft
demo , i found that if the demo ,if we want to connect to the database , we
must&nbsp;&nbsp;first do &nbsp;&quot;TTransport tr =3D new
TSocket(&quot;localhost&quot;, 9160) &quot; .<o:p></o:p></p>

<div>

<p class=3DMsoNormal>&nbsp;&nbsp; Then &nbsp;we operate on the database thr=
ough
this TTransport .&nbsp;<o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal>&nbsp;&nbsp; But this operation a<span style=3D'font-s=
ize:
10.0pt;font-family:"Arial","sans-serif"'>ssigns a fixed IP , so all request=
s
would transformed to this IP . And the cassandra node of this ip would load=
 a
heavy reading load and proxy load .</span><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

<div>

<p class=3DMsoNormal><span style=3D'font-size:10.0pt;font-family:"Arial","s=
ans-serif"'>&nbsp;&nbsp;
Do i understand this wrong , or cassandra client has other way to access
cassandra and doesn't need to assign a fixed IP?</span><o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

<div>

<p class=3DMsoNormal><span style=3D'font-family:"Arial","sans-serif"'><br
clear=3Dall>
</span><br>
-- <o:p></o:p></p>

<div>

<p class=3DMsoNormal>Best regards,<o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

<div>

<p class=3DMsoNormal>Ivy Tang<o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

<div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

</div>

<p class=3DMsoNormal><br>
<br clear=3Dall>
<br>
-- <o:p></o:p></p>

<div>

<p class=3DMsoNormal>Best regards,<o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

<div>

<p class=3DMsoNormal>Ivy Tang<o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

<div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

</div>

</div>

</div>

</div>

<p class=3DMsoNormal><br>
<br clear=3Dall>
<br>
-- <o:p></o:p></p>

<div>

<p class=3DMsoNormal>Best regards,<o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

<div>

<p class=3DMsoNormal>Ivy Tang<o:p></o:p></p>

</div>

<div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

<div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

<p class=3DMsoNormal><o:p>&nbsp;</o:p></p>

</div>

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