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Posted to user@ignite.apache.org by Zhengqingzheng <zh...@huawei.com> on 2016/05/27 03:33:22 UTC
write behind question
Hi there,
I have one scenario that I need to make sure changes inside the cache need to be persisted before I do some other sql queries to database.
However when the cache is in "write behind" mode, I am not sure whether all data has been updated. So, is there any way to persist the date before calling sql to the database?
Best regards,
Kevin
Re: write behind question
Posted by Vladislav Pyatkov <vl...@gmail.com>.
Hello,
Oh, I incorrectly understood you.
You can look at Write-Through[1]. This means that every path to the cache
will be written to the vault (synchronously).
In addition, you can perform SQL directly on Ignite[2].
1. https://apacheignite.readme.io/docs/persistent-store
2. https://apacheignite.readme.io/docs/sql-queries
On Fri, May 27, 2016 at 10:13 AM, Vladislav Pyatkov <vl...@gmail.com>
wrote:
> Hello,
>
> I think you need to use Ignite Cache.load Cache().
> See the article: https://apacheignite.readme.io/docs/data-loading
>
> On Fri, May 27, 2016 at 6:33 AM, Zhengqingzheng <zhengqingzheng@huawei.com
> > wrote:
>
>> Hi there,
>>
>> I have one scenario that I need to make sure changes inside the cache
>> need to be persisted before I do some other sql queries to database.
>>
>> However when the cache is in “write behind” mode, I am not sure whether
>> all data has been updated. So, is there any way to persist the date before
>> calling sql to the database?
>>
>>
>>
>>
>>
>> Best regards,
>>
>> Kevin
>>
>
>
>
> --
> Vladislav Pyatkov
>
--
Vladislav Pyatkov
Re: write behind question
Posted by Vladislav Pyatkov <vl...@gmail.com>.
Hello,
I think you need to use Ignite Cache.load Cache().
See the article: https://apacheignite.readme.io/docs/data-loading
On Fri, May 27, 2016 at 6:33 AM, Zhengqingzheng <zh...@huawei.com>
wrote:
> Hi there,
>
> I have one scenario that I need to make sure changes inside the cache need
> to be persisted before I do some other sql queries to database.
>
> However when the cache is in “write behind” mode, I am not sure whether
> all data has been updated. So, is there any way to persist the date before
> calling sql to the database?
>
>
>
>
>
> Best regards,
>
> Kevin
>
--
Vladislav Pyatkov