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Cache

Cache

2005-06-23 - By Baker, Jay

Back

Reply: 1 2 3 4 5 6 7 8 9

My suggestion would be to use an existing cache implementation rather than
write your own (unless there are unusual reasons to do so). If you are worrying
about weak and soft references, caching policies and the like, you can take
advantage of the work that others have already done. If you don't need all that
, you can stick with a more simple implementation.

There are non-commercial caching solutions that would likely fit your needs. I
use Open Symphony's OSCache quite a bit.

-- --Original Message-- --
From: Rumpa Giri [mailto:girirx@(protected)]
Sent: Thursday, June 23, 2005 12:32 PM
To: J2EEPATTERNS-INTEREST@(protected)
Subject: Re: Cache

I think I am going to go the memory route. I was reading the softreference API,
I wanted to know if there area any good links/reading material besides the API
description. I would like to create the cache using the SoftReference API.

Thanks
Rgiri.

Chester Chen <chesterxgchen@(protected)> wrote:

If the number of records is not large, retrieve all
the reads into memory and cache it is the way to go.
how does you select it is not important. The important
is only cache the info you need.

If the records is large, then read everything into
memory will become impractical, as it consume too much
memory.

Chester

--- Rumpa Giri wrote:

> Hello,
>
> I would like to know what will be a good way to
> implement the following:
>
> We have many read only tables in the database. I was
> thinking rather than doing a select all from the
> table all the time, we would like to keep the
> collection of objects in memory to reduce the
> database traffic. The SQLs for this is pretty much
> SELECT * FROM TABLENAME. No filtering is present.
> And this collection of objects is referenced too
> many times.
>
> Any related articles, pointer will help us.
>
> Thanks,
> Rgiri.
>
>
> -- ---- ---- ---- ---- ---- -----
> Yahoo! Mail Mobile
> Take Yahoo! Mail with you! Check email on your
> mobile phone.
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859 (See http://iso-8859.ora-code.com)-1">

<META content="MSHTML 6.00.2800.1226" name=GENERATOR></HEAD>
<BODY>
<DIV>My
suggestion would be to use an existing cache implementation rather than write
your own (unless there are unusual reasons to do so). If you are worrying about
weak and soft references, caching policies and the like, you can take advantage
of the work that others have already done. If you don't need all that, you can
stick with a more simple implementation.</DIV>
<DIV> </DIV>
<DIV>There
are non-commercial caching solutions that would likely fit your needs. I use
Open Symphony's OSCache quite a bit.</DIV>
<BLOCKQUOTE>
<DIV class=OutlookMessageHeader dir=ltr align=left>-- --Original Message-- -- From: Rumpa Giri
[mailto:girirx@(protected)] Sent: Thursday, June 23, 2005 12:32
PM To: J2EEPATTERNS-INTEREST@(protected) Subject: Re:
Cache </DIV>
<DIV>I think I am going to go the memory route. I was reading the
softreference API, I wanted to know if there area any good links/reading
material besides the API description. I would like to create the cache using
the SoftReference API.</DIV>
<DIV> </DIV>
<DIV>Thanks</DIV>
<DIV>Rgiri. Chester Chen <chesterxgchen@(protected)>
wrote:</DIV>
<BLOCKQUOTE class=replbq
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"
>If
the number of records is not large, retrieve all the reads into memory
and cache it is the way to go. how does you select it is not important.
The important is only cache the info you need. If the records is
large, then read everything into memory will become impractical, as it
consume too much memory. Chester --- Rumpa Giri
<GIRIRX@(protected)>wrote: > Hello, > > I would like
to
know what will be a good way to > implement the following: >
 > We have many read only tables in the database. I was >
thinking rather than doing a select all from the > table all the time
,
we would like to keep the > collection of objects in memory to reduce
the > database traffic. The SQLs for this is pretty much >
SELECT * FROM TABLENAME. No filtering is present. > And this
collection of objects is referenced too > many times. > &gt
;
Any related articles, pointer will help us. > > Thanks, &gt
;
Rgiri. > > > -- ---- ---- ---- ---- ---- ----- >
Yahoo! Mail Mobile > Take Yahoo! Mail with you! Check email on
your > mobile phone. >
 > ===============================================================
===== >
Companion Site: http://www.corej2eepatterns.com > J2EE
BluePrints: > http://java.sun.com/blueprints/corej2eepatterns >
List
Archive: > http://archives.java.sun.com/archives/j2eepatterns
-interest.html >
Unsubscribing: email "signoff J2EEPATTERNS-INTEREST" > to
listserv@(protected) __ ____ ____ ____ ____ ____ ____ ____ ____
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You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection
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href="http://pa.yahoo.com/*http://us.rd.yahoo.com/evt=33539/*http://football
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&ovrfd=YAH&ovtac=AD ">Rekindle
the Rivalries. Sign up for Fantasy Football</A>
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