Re: java.sql.SQLNonTransientException: Instance has too many concurrent requests: 100

You might find this useful.

http://stackoverflow.com/questions/10424442/what-are-the-connection-limits-for-google-cloud-sql-from-app-engine-and-how-to

Amit

On Wed, Feb 13, 2013 at 6:42 PM, tom hill <tom.hill.fellow@gmail.com> wrote:

we have built  a benchmark [tpc c] and simulator under a Google Research grant.

the benchmark [a client python program] generates the following number of concurrent users

[accepted by a frontend java program(multiple instances) that sends SQL statements to CloudSQL database instances of varying sizes]:

number of concurrent users:

10,

20,

40,

160,

320,

1,200,

7,500    

the  frontend java program uses: 

1. conn = DriverManager.getConnection("jdbc:google:rdbms://instance:xxxxx/tpcc32")

2. conn.prepareStatements

3. xxxxxxx.executeUpdate()   AND

4. yyyyyy.executeQuery()

to communicate with the CloudSQL instance

thanks for your help

tom 

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