Perrin Harkins writes:
Bas A.Schulte wrote:
I do when the delivery mechanism has failed for 6 hours and I have 12000
messages in the queue *and* make sure current messages get sent in time?
I don't know, that's an application-specific choice. Of course JMS
doesn't know either.
This is
Hi all,
On Tuesday, November 19, 2002, at 11:09 PM, Perrin Harkins wrote:
Stephen Adkins wrote:
So what I think you are saying for option 2 is:
* Apache children (web server processes with mod_perl) have two
personalities:
- user request processors
- back-end work
Bas A.Schulte writes:
still is something I haven't figured out. Basically, I need some way to
coordinate the children so each child can find out what the other
children are doing.
Use a table in your database. The DB needs to support row level
locking (we use Oracle). Here's an example:
Bas A.Schulte wrote:
none of
them seemed to be stable/fast under heavy load even though I would have
preferred that as it would allow me to do something to handle
data-sharing between children via the parent which always seems to be in
issue in Apache/mod_perl.
What are you trying to share?
Nigel Hamilton wrote:
I need to fork a lot of processes per request ... the memory cost
of forking an apache child is too high though.
So I've written my own mini webserver in Perl
It doesn't seem like this would help much. The thing that makes
mod_perl processes big is Perl. If you run
Hi Perrin,
On Tuesday, November 26, 2002, at 06:14 PM, Perrin Harkins wrote:
Bas A.Schulte wrote:
none of
them seemed to be stable/fast under heavy load even though I would
have preferred that as it would allow me to do something to handle
data-sharing between children via the parent which
At 07:04 PM 11/26/2002 +0100, Bas A.Schulte wrote:
On Tuesday, November 26, 2002, at 06:14 PM, Perrin Harkins wrote:
Bas A.Schulte wrote:
I have been looking at some of the IPC::Share* modules, the one I think
I can use is (not sure here) IPC::ShareLite, but that darned thing won't
install
Quite odd. I read the performance thread that's on the P5EE page which
showed that DBI (with MySQL underneath) was very fast, came in 2nd.
Anyone care to elaborate why this is? After all, shared-memory is a
thing in RAM, why isn't that faster?
Hi Bas,
You made some really
Perrin Harkins writes:
I think you are vastly over-estimating how much effort JMS/EJB/etc.
would save you.
EJB doesn't save you anything. It creates work and complexity,
esp. Entity Beans. I've built large systems using EJB and Perl. The
Perl project was built faster, with fewer people,
Bas A.Schulte wrote:
Quite odd. I read the performance thread that's on the P5EE page which
showed that DBI (with MySQL underneath) was very fast, came in 2nd.
Anyone care to elaborate why this is? After all, shared-memory is a
thing in RAM, why isn't that faster?
I have an article that I'm
Aaron Johnson wrote:
This model has eased my testing as well since I can run the script
completely external of the web server I can run it through a debugger if
needed.
You realize that you can run mod_perl in the debugger too, right? I use
the profiler and debugger with mod_perl
Aaron Johnson wrote:
I know you _can_ , but I don't find it convenient.
For me it's pretty much the same as debugging a command-line script. To
debug a mod_perl handler I just do something like this:
httpd -X -Ddebug
Then I hit the URL with a browser or with GET and it pops me into the
Perrin Harkins writes:
I try to code it so that the business logic is not dependent on a
certain runtime environment, and then write a small mod_perl handler to
call it.
I've been doing a lot of test-first coding. It makes it so that you
start Apache, and the software just runs. With
Stephen Adkins wrote:
So what I think you are saying for option 2 is:
* Apache children (web server processes with mod_perl) have two
personalities:
- user request processors
- back-end work processors
* When a user submits work to the queue, the child is acting in a
Hi Stephen,
On Tue, 19 Nov 2002, Stephen Adkins wrote:
My question with this approach is not whether it works for synchronous
execution (the user is willing to wait for the results to come back)
but whether it makes sense for asynchronous execution (the user will
come back and get the
On Tue, 2002-11-19 at 16:28, Stephen Adkins wrote:
At 08:18 PM 11/18/2002 -0700, Rob Nagler wrote:
We digress. The problem is to build a UI to Sabre. I still haven't
seen any numbers which demonstrate the simple solution doesn't work.
Connecting to Sabre is no different than connecting
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