Hi Fsapei,
I don't think that it's feasible or at least easy to implement your
approach without a downtime or changing cache name in queries once the
second cache is fully propagated.
How would you implement your use case if instead of an Ignite cache you
would be using a data base?
--
Denis
On 11/28/2015 11:50 AM, Ferry Syafei Sapei wrote:
Thank you for the reply.
The client uses JDBC Driver to get the data from Ignite.
The swap between new cache and old cache should be hidden from the client.
Would it be possible to do this in Ignite?
My first idea is to create a new cache and fill it with new data data.
Afterwards, within a transaction, the old cache content will be
deleted and all the content from new cache will be inserted to the old
cache.
Am 28.11.2015 um 03:35 schrieb Dmitriy Setrakyan
<[email protected] <mailto:[email protected]>>:
Hi Fsapei,
Ignite supports dynamic caches, so you can create and destroy caches
on the fly:
https://apacheignite.readme.io/docs/data-grid#section-jcache
To support your use case, you can:
1. create a new cache and start populating it
2. while the new cache is populated, the queries should go to the old
cache.
3. when new cache is fully populated, route the queries to the new cache
4. delete the old cache
Will this work?
D.
On Sat, Nov 28, 2015 at 3:38 AM, Ferry Syafei Sapei
<[email protected] <mailto:[email protected]>> wrote:
Hallo,
I would like to use Ignite as Data Grid. The cache will be
initially loaded with a lot of data (e.g. a CSV file with a size
more than 10 GB).
When a new CSV file is available, the current Cache content must
be replaced with the new data from the new CSV. The old cache
content must be completely deleted.
The switch from old cache content to the new one must happen
without downtime. When any SQL Clients execute query during the
switch, they should still obtain any data from the old cache
content, since the switch has not finished yet.
Could somebody please advise me, how to continuously update the
cache like the description above?
Thank you.
Best regards,
fsapei
--
Regards,
Denis Magda
Lead Professional Services Engineer, GridGain Systems
http://www.gridgain.com/
