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Date: Tue, 05 Jul 2011 11:51:46 +0200
From: Claudio Martella <claudio.martella@tis.bz.it>
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To: user@hbase.apache.org
Subject: Re: client-side caching
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Totally understand. As a matter of fact I didn't mention my table is
read-only or insert-only (no data is modified), so no real invalidation
necessary here. I guess this means i should go for my own memcache on
the client side.

Thanks!


On 7/5/11 11:39 AM, Ryan Rawson wrote:
> Caching sounds easy until you need to worry about invalidation. It's ha=
rd to
> build efficient and correct invalidation.
> On Jul 5, 2011 2:13 AM, "Claudio Martella" <claudio.martella@tis.bz.it>=

> wrote:
>> I've seen that. But that's about caching on regionserver-side through
>> memcache.
>>
>> You still have the network roundtrip. I'd like to avoid at all
>> contacting the regionserver, when possible. So I was guessing whether
>> the hbase-client would have some caching embedded, otherwise I'll
>> implement it through memcache.
>>
>>
>> On 7/4/11 7:03 PM, Ted Yu wrote:
>>> See HBASE-4018
>>>
>>> On Mon, Jul 4, 2011 at 7:33 AM, Claudio Martella <
> claudio.martella@tis.bz.it
>>>> wrote:
>>>> Hello list,
>>>>
>>>> i'm using hbase 0.90.3 on a 5 nodes cluster. I'm using a table as a
>>>> string<->long map. As I'm using this map a lot, I was thinking about=

>>>> installing memcache on the client side, as to avoid flooding hbase f=
or
>>>> the same value over and over.
>>>>
>>>> What is the best practice in these situations? some client-side cach=
ing
>>>> already in hbase?
>>>>
>>>> Best,
>>>>
>>>> Claudio
>>>>
>>>> --
>>>> Claudio Martella
>>>> Digital Technologies
>>>> Unit Research & Development - Analyst
>>>>
>>>> TIS innovation park
>>>> Via Siemens 19 | Siemensstr. 19
>>>> 39100 Bolzano | 39100 Bozen
>>>> Tel. +39 0471 068 123
>>>> Fax +39 0471 068 129
>>>> claudio.martella@tis.bz.it http://www.tis.bz.it
>>>>
>>>> Short information regarding use of personal data. According to Secti=
on
> 13
>>>> of Italian Legislative Decree no. 196 of 30 June 2003, we inform you=

> that we
>>>> process your personal data in order to fulfil contractual and fiscal=

>>>> obligations and also to send you information regarding our services =
and
>>>> events. Your personal data are processed with and without electronic=

> means
>>>> and by respecting data subjects' rights, fundamental freedoms and
> dignity,
>>>> particularly with regard to confidentiality, personal identity and t=
he
> right
>>>> to personal data protection. At any time and without formalities you=
 can
>>>> write an e-mail to privacy@tis.bz.it in order to object the processi=
ng
> of
>>>> your personal data for the purpose of sending advertising materials =
and
> also
>>>> to exercise the right to access personal data and other rights refer=
red
> to
>>>> in Section 7 of Decree 196/2003. The data controller is TIS Techno
>>>> Innovation Alto Adige, Siemens Street n. 19, Bolzano. You can find t=
he
>>>> complete information on the web site www.tis.bz.it.
>>>>
>>>>
>>>>
>>>>
>>>>
>>
>> --
>> Claudio Martella
>> Free Software & Open Technologies
>> Analyst
>>
>> TIS innovation park
>> Via Siemens 19 | Siemensstr. 19
>> 39100 Bolzano | 39100 Bozen
>> Tel. +39 0471 068 123
>> Fax +39 0471 068 129
>> claudio.martella@tis.bz.it http://www.tis.bz.it
>>
>> Short information regarding use of personal data. According to Section=
 13
> of Italian Legislative Decree no. 196 of 30 June 2003, we inform you th=
at we
> process your personal data in order to fulfil contractual and fiscal
> obligations and also to send you information regarding our services and=

> events. Your personal data are processed with and without electronic me=
ans
> and by respecting data subjects' rights, fundamental freedoms and digni=
ty,
> particularly with regard to confidentiality, personal identity and the =
right
> to personal data protection. At any time and without formalities you ca=
n
> write an e-mail to privacy@tis.bz.it in order to object the processing =
of
> your personal data for the purpose of sending advertising materials and=
 also
> to exercise the right to access personal data and other rights referred=
 to
> in Section 7 of Decree 196/2003. The data controller is TIS Techno
> Innovation Alto Adige, Siemens Street n. 19, Bolzano. You can find the
> complete information on the web site www.tis.bz.it.
>>
>>
>>


--=20
Claudio Martella
Free Software & Open Technologies
Analyst

TIS innovation park
Via Siemens 19 | Siemensstr. 19
39100 Bolzano | 39100 Bozen
Tel. +39 0471 068 123
Fax  +39 0471 068 129
claudio.martella@tis.bz.it http://www.tis.bz.it

Short information regarding use of personal data. According to Section 13=
 of Italian Legislative Decree no. 196 of 30 June 2003, we inform you tha=
t we process your personal data in order to fulfil contractual and fiscal=
 obligations and also to send you information regarding our services and =
events. Your personal data are processed with and without electronic mean=
s and by respecting data subjects' rights, fundamental freedoms and digni=
ty, particularly with regard to confidentiality, personal identity and th=
e right to personal data protection. At any time and without formalities =
you can write an e-mail to privacy@tis.bz.it in order to object the proce=
ssing of your personal data for the purpose of sending advertising materi=
als and also to exercise the right to access personal data and other righ=
ts referred to in Section 7 of Decree 196/2003. The data controller is TI=
S Techno Innovation Alto Adige, Siemens Street n. 19, Bolzano. You can fi=
nd the complete information on the web site www.tis.bz.it.