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From: Andrey Mashenkov <andrey.mashenkov@gmail.com>
Date: Wed, 12 Apr 2017 19:35:41 +0300
Message-ID: <CANCAXEEZRTW36ZSsaF8Lb4exJiA89x3rkGKHHQBJ3GDozR3Jjw@mail.gmail.com>
Subject: Re: Repeatable cache updates
To: user@ignite.apache.org
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archived-at: Wed, 12 Apr 2017 16:35:47 -0000

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Hi,

3) Initial query is not mandatory, you can set it to null to receive
updates only.

Also, you can try CacheInterceptor to update other caches synchronously. It
can cause performance issues as
CacheInterceptor methods are called from sensitive part of code inside
synchronized block, but it should be ok,
if you update same key in another cache and it is one-way cache
synchronization (so, deadlock is not possible).


On Wed, Apr 12, 2017 at 7:18 PM, nskovpin <kolehandro@gmail.com> wrote:

> Hello, Ignite team!
> Assume that i have a big cache A (key - id, value - date, etc ). This cache
> is being updated every 5 minutes. My question is: what is the best way to
> update my other caches, that were built from cache A (value has a field
> "date"). I have some thoughts:
> 1) I can create broadcast or computeTask, than read A's local entries and
> update another caches (but i should read all my entries, even they haven't
> updated yet)
> 2) I can create cacheEvents and update another caches - but i've read that
> events are designed more for auditing purposes.
> 3) I can create continuous query, but i don't need to query my data:)
>
>
>
> --
> View this message in context: http://apache-ignite-users.
> 70518.x6.nabble.com/Repeatable-cache-updates-tp11910.html
> Sent from the Apache Ignite Users mailing list archive at Nabble.com.
>


-- 
Best regards,
Andrey V. Mashenkov

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<div dir=3D"ltr">Hi,<div><br></div><div>3) Initial query is not mandatory, =
you can set it to null to receive updates only.</div><div><br></div><div>Al=
so, you can try CacheInterceptor to update other caches synchronously. It c=
an cause performance issues as=C2=A0</div><div>CacheInterceptor methods are=
 called from sensitive part of code inside synchronized block, but it shoul=
d be ok,</div><div>if you update same key in another cache and it is one-wa=
y cache synchronization (so, deadlock is not possible).<br></div><div><br><=
/div></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Wed=
, Apr 12, 2017 at 7:18 PM, nskovpin <span dir=3D"ltr">&lt;<a href=3D"mailto=
:kolehandro@gmail.com" target=3D"_blank">kolehandro@gmail.com</a>&gt;</span=
> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bo=
rder-left:1px #ccc solid;padding-left:1ex">Hello, Ignite team!<br>
Assume that i have a big cache A (key - id, value - date, etc ). This cache=
<br>
is being updated every 5 minutes. My question is: what is the best way to<b=
r>
update my other caches, that were built from cache A (value has a field<br>
&quot;date&quot;). I have some thoughts:<br>
1) I can create broadcast or computeTask, than read A&#39;s local entries a=
nd<br>
update another caches (but i should read all my entries, even they haven=
9;t<br>
updated yet)<br>
2) I can create cacheEvents and update another caches - but i&#39;ve read t=
hat<br>
events are designed more for auditing purposes.<br>
3) I can create continuous query, but i don&#39;t need to query my data:)<b=
r>
<br>
<br>
<br>
--<br>
View this message in context: <a href=3D"http://apache-ignite-users.70518.x=
6.nabble.com/Repeatable-cache-updates-tp11910.html" rel=3D"noreferrer" targ=
et=3D"_blank">http://apache-ignite-users.<wbr>70518.x6.nabble.com/<wbr>Repe=
atable-cache-updates-<wbr>tp11910.html</a><br>
Sent from the Apache Ignite Users mailing list archive at Nabble.com.<br>
</blockquote></div><br><br clear=3D"all"><div><br></div>-- <br><div class=
=3D"gmail_signature" data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><d=
iv>Best regards,<br>Andrey V. Mashenkov<br></div></div></div>
</div>

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