my web-apps take long to send HTTP response

fazbob

i have a service that requires data to be sent from a remote server to my server at regular intervals. the data is sent in xml format over http (using POST method). i have a PHP app that receives the data and processes it.

recently i noticed that sometimes data is sent twice to my php applicaton from the remote server, when this issue was diagnosed it turned out that the problem was from my side: my application was taking long to send back a HTTP response to the sender of the data and thus the data was being re-transmitted! apparently my application was taking longer than 1 MINUTE to send back a HTTP response!

The response the remote server expects is just something like "200 OK"... is this an issue at the web-server level (im using apache) or can it also be solved at the application level?

any idea on how to crack this?

phaz

justsomeone

the HTTP 200 response is delivered by your server as a header at the top of your page.

A slow response could be the result of a number of things.

A slow/unreliable connection.
Is your "receiving" website (with the php app) professionally hosted, on a highly available server, with plenty of bandwidth? How about your "sending" server?
A slow/unreliable server
Is your "receiving" server equipped with sufficient ram/disk space/computing power etc? Are there "spikes"in demand which are more than it can handle? Is the server tuned in such a way as to share out its resources in a manner that suits the httpd server?
A slow/unreliable application
Does your application write out its own messages to a log file? Can you see the "failed" attempts in the logs? Can you see what's taking so long?

The above questions should help you diagnose the problem.