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Full Discussion: Migration
Top Forums UNIX for Advanced & Expert Users Migration Post 102019 by new2ss on Wednesday 15th of March 2006 05:27:37 AM
Old 03-15-2006
Migration

Hi all,

Would appreciate advise on my situation.

Currently server A is in production. Server A takes in data from Server X, does some processing and send to server Y. We are going to develop a different system in server B, something like an enhanced version of A. Server A will be retired once server B is commissioned. Server B is also required to take data from server X, does some processing and send to server Y.

What strategy should i adopt?

1) Develop B as a standalone. However, when i conduct end to end testing for B, B must also send results to Y. But because Y is an external server, it cannot take in results from A and B. The data will be out of sync*. If i were to adopt this strategy, how can i seperate the results from A and B ? Meaning, how can i verify that B is crunching the data correctly, and successful sending to Y ( eg, comparision with data from A) and at the same time only trigger the results from A to Y?
****
The reason that the data will be out of sync is because A may be sending
1 2 3,1,2,3
and B is sending 1,2,3.
Something like an summary of A. Y is only interested in unique values, hence B is more optimal
****
2) Develop B and at the same time bring in A. That is, while developing B, make provisions to integrate A. Hence only one copy of the results will be sent out. I can do comparision of the results from A and B.( to ensure B is developed correctly) and send results from A's processing. And if i need to retire A, i just cut of the provisions made earlier.

(2) seems initutive, but more importantly, have i missed out any critical gaps in my planning strategies?
 

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Jifty::Script::Server(3pm)				User Contributed Perl Documentation				Jifty::Script::Server(3pm)

NAME
Jifty::Script::Server - A standalone webserver for your Jifty application SYNOPSIS
jifty server jifty server --port 6666 jifty server --stop DESCRIPTION
Starts and stops Jifty's standalone web server. options --port The port to run the server on. Overrides the port in the config file, if it is set there. The default port is 8888. --user USER The user to become after binding to the port. It is advised that you use this when binding to low ports, instead of running as "root". This option only works if the server is using a Net::Server subclass. --group GROUP The group to become after binding to the port. Like "--user", this option only works if the server is using a Net::Server subclass. --host HOSTNAME The host to bind to. This option only works if the server is using a Net::Server subclass. --stop Stops the server, if it is running. This is accomplished by reading the PID from "var/jifty-server.pid" --restart restart the server, if it is running. This is accomplished by killing the child pid, and let parent pid create a new one --sigready SIGNAL Sets the signal number that should be sent to the server's parent process when the server is ready to accept connections. --quiet Reduces the amount of debug output sent by the server --dbiprof Turns on DBI profiling; see DBI::ProfileDumper. --help Print a brief help message and exits. --man Prints the manual page and exits. DESCRIPTION
When you're getting started with Jifty, this is the server you want. It's lightweight and easy to work with. METHODS
run "run" takes no arguments, but starts up a Jifty server process for you. perl v5.14.2 2010-12-08 Jifty::Script::Server(3pm)
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