LiveCode SQL APIs

Paul Dupuis paul at researchware.com
Mon Feb 14 18:08:23 EST 2011


Björnke,

In other languages, in days gone by, it was good practice to keep the 
connection open if an application expected to issue multiple queries 
(such as a user driven reporting application) becuase there was overhead 
in setting up a connection and creating and opening a connection, 
executing a query, and closing a connection for each query could impact 
performance.

With the speed of today's servers, databases, clients, networks, and 
LiveCode, I am not sure connection maintenance for performance has any 
noticeable impact.

I am also interested because, even though I have tried to thoroughly 
trap for connection timeout error and execute code to reconnect, i still 
get "connection has gone away" errors every now and then. Instead of 
revising all my error raping code again, I am considering code for 
maintaining a persistent connection.

On 2/14/2011 5:44 PM, Björnke von Gierke wrote:
> I'm not a experienced sql - lc connection maker either, but i ask myself why to keep a connection alive? So I take the freedom to append my own question to yours:
>
> Some people like to keep alive their DB connections. But isn't it usually a more robust approach to close the connection as soon as the query is handled?
>
> I've found it useful to handle mass-writes slightly differently, but there is normally so much happening, that the DB connection doesn't really idle at all.
>
> On 14 Feb 2011, at 23:38, Paul Dupuis wrote:
>
>> I can think a few way to construct a "keep-alive" process to ensure that a connection to a MySQL database via the LiveCode database drivers doesn't time out. However, it occurs to me that folks who spend more time writing LiveCode MySQL applications than I may have come up with a "best" way to keep the connection from timing out, so I thought I would ask the list. An idle loop would do it, but using idle is not a "best" approach.
>>
>> Any "best" approaches out there that someone cares to share?
>>
>> Thanks!
>>
>> -- 
>> Paul Dupuis
>> Cofounder
>> Researchware, Inc.
>> http://www.researchware.com/
>>
>>
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-- 
Paul Dupuis
Cofounder
Researchware, Inc.
http://www.researchware.com/





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