Re: cache namespace support

[Andrey Gura <ag...@apache.org>]

Hi,

There is no such concept as namespace in Ignite. I think tha both ways
is acceptable but it depends on your requirements and there is no
silver bullet.

On Tue, Feb 28, 2017 at 4:16 AM, shawn.du <sh...@neulion.com.cn> wrote:
> Hi,
>
> I have a use case like below:
> I want to store key-value caches in ignite, but each key-value has a
> namespace. key are unique in a namespace.
> Each cache entry has the same data type for both key and value.
> When query, We always query by key and namespace.
> sometimes, we query all caches of a namespace or remove all entries in one
> namespace.
>
> I think there are two solutions:
> #1 create cache for each namespace, like use namespace as the cache name.
>   using the approach, there may many caches in ignite.  IMO, it is a bit
> dirty, I meant when using ignitevisor to show caches
>   you will see many caches.
> #2 create one cache, each cache entry has namespace,key and value. using
> (namespace,key) as the cache key.
>   This solution is clean. but you have to create a static class/complex
> configuration. also you have to use SQL to query all/remove all
>   data in a namespace.
>
> I think this is a very common use case. Can ignite support it in  lower
> layer for solution clean and  better performance?
> welcome your comments.
>
> Thanks
> Shawn
>