Near caches

[Alexey Kuznetsov <ak...@gridgain.com>]

Igniters,

I've read documentation about Near Cahces:
http://apacheignite.readme.io/v1.2/docs/near-caches

And for me it is not very useful.

I have following questions:

1) How it actually works? Any Example are very welcome.
2) How it works in different cache modes ATOMIC/TRANSACTIONAL?
3) What will happened in near cache on client node when value changed on
data node?
4) Could I use scan/sql local queries on near caches on client nodes?

-- 
Alexey Kuznetsov
GridGain Systems
www.gridgain.com

Re: Near caches

[Dmitriy Setrakyan <ds...@apache.org>]

My comments are below.

Alexey, feel free to update documentation if you feel anything is missing.

D.

On Thu, Jul 2, 2015 at 8:05 PM, Alexey Kuznetsov <ak...@gridgain.com>
wrote:

> Igniters,
>
> I've read documentation about Near Cahces:
> http://apacheignite.readme.io/v1.2/docs/near-caches
>
> And for me it is not very useful.
>
> I have following questions:
>
> 1) How it actually works? Any Example are very welcome.
>

Near cache is a configuration. All cache APIs remain the same.


> 2) How it works in different cache modes ATOMIC/TRANSACTIONAL?
>

It works in both, ATOMIC and TRANSACTIONAL modes.


> 3) What will happened in near cache on client node when value changed on
> data node?
>

Depending on the invalidation configuration flag, the value will either be
updated or invalidated.


> 4) Could I use scan/sql local queries on near caches on client nodes?
>

You can get a local iterator over the near cache if needed. There is no
need to index near cache data.

D.


>
> --
> Alexey Kuznetsov
> GridGain Systems
> www.gridgain.com
>