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From Claudio Martella <claudio.marte...@tis.bz.it>
Subject Re: client-side caching
Date Tue, 05 Jul 2011 09:51:46 GMT
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 hard 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 for
>>>> the same value over and over.
>>>>
>>>> What is the best practice in these situations? some client-side caching
>>>> 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 Section
> 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 the
> 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 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.
>>>>
>>>>
>>>>
>>>>
>>>>
>>
>> --
>> 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 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 the 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 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.
>>
>>
>>


-- 
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 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 the 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
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.





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