Re: [kura-dev] DbService questions

["Woodard, David" <david.woodard@xxxxxxxxxxxx>]

Hi Scott,

1.) Yes, we wrapped HqSql in a bundle and host it here https://github.com/eurotech/kura_addons . 

2.) Yes and No. We historically only used the database as a buffer for storing outbound messages before publishing to a broker. This provides a methodology for storing messages in cases where the MQTT connection drops. We are adding a feature called Kura Wires that will use the DB for additional purposes. However, we have no planned changes for the DbService at this time.

3.) No, this is something we haven’t looked in to in detail. 

4.) As mentioned in 2, Kura Wires will be using the DbService to store and retrieve data. It is still early days for Kura Wires, so stay tuned. 

Hope this helps. Happy to expand on any point if needed.

Thanks,

--Dave

On Sep 20, 2016, at 10:05, Lewis, ScottX <scottx.lewis@xxxxxxxxx> wrote:

Greetings,

I've noticed that the DbService in Kura is currently implemented via Hqsql v 2.3.   

A couple of questions:

1) I see that there is no Hqsql bundle in Orbit.    Does that mean Kura team bundlizes Hqsql, or is it someone else?

2) Any other DbService/impl options considered/evaluated/planned for Kura?

3) Do you have any information or pointers to memory and disk usage patterns of HqSQL...or know of public ones elsewhere?

4) Are there any use cases for NoSQL db options in future?

Thanksinadvance,

Scott
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