On 10/24/06, Matt Hogstrom <[EMAIL PROTECTED]> wrote:
Chris,I'll take a look at the patch you provided. The best way to submit patches is to open a JIRA and attach the patch there. When attaching the patch it will ask you to grant the patch to the ASF. this provides a good trail for copyright info as well as visibility for people tracking the project.On Oct 24, 2006, at 11:05 AM, Christopher Blythe wrote:I know it has been a while since this thread has been visited; however, I finally got a chance to add a "Session Direct" mode to the DayTrader runtime modes. Fortunately, it did not require that many changes to the source.
Here is a brief summary of the changes I made...
- Added an inSession flag to TradeDirect class. If this flag is true, we skip the transaction management logic
- Added similar logic to the KeySequenceDirect class
- Created a new session bean (TradeJDBC) which implements the TradeServices interface. Each service method within this session bean creates a new instance of TradeDirect with inSession set to true
- Added two additional primitives: PingServlet2Session2JDBC and PingServlet2Session2JDBCCollection
I tested the changes out under load without any exceptions. Just for reference, I performed the tests on a 1 x 3.2 GHz Intel Xeon system (connecting to a DB2 database) and noted the following results.
Direct Mode: 645 req/sec
Session Direct Mode: 119 req/sec
I have attached a patch file based off of a 10/24/2006 snapshot of daytrader/trunk. If you have any comments, let me know. There are probably some things in there that could be cleaned up (ie. comments, class names, etc.), but I think this does provide a good starting point.
Thanks...
ChrisOn 7/24/06, Matt Hogstrom < [EMAIL PROTECTED]> wrote:I think this makes a lot of sense Chris. I assume your adding a third runtime mode as opposed to
removing the ejb mode?
I'd like to start thinking about how to rearchitect DT ro be more relevant. I'd like to include a
Spring mode as well as update the EJBs to EJB 3.0.
Any other thoughts out there?
Christopher Blythe wrote:
> The EJB and Direct modes in Daytrader provide a good measure of how a pure
> EJB (Session/CMP Entity) application stacks up against a pure JDBC based
> app. However, one of the things I have felt Trade/Daytrader has always
> lacked is a middle ground. In my experience, I have neither seen nor heard
> of a large number of customers out there in the market using the full EJB
> programming model (Session and Entity beans). I think a more common
> customer
> usage scenario is the stateless session bean to JDBC model where the direct
> JDBC calls are wrapped/managed by the SSB.
>
> I have already taken a quick stab at an implementation since all it really
> requires is a merging of the TradeDirect and TradeBean code. I have most of
> the operations working on a single client, but haven't performed any load
> testing yet.
>
> Anyway, I wanted to submit the idea to group and see if there were any
> comments.
>
--
"I say never be complete, I say stop being perfect, I say let... lets evolve, let the chips fall where they may." - Tyler Durden<session_jdbc.patch>Matt Hogstrom
--
"I say never be complete, I say stop being perfect, I say let... lets evolve, let the chips fall where they may." - Tyler Durden
