Why use shared memory instead of a pipe or a socket? In fact, since the server already uses a socket, you could completely avoid the Perl script.

From what I've read, it's much faster to communicate between processes using shared memory.

Re the php script: I should have explained that a little better.

Currently there is 50 requests per second from this php script and there is 4 servers doing this simultaneously at the moment. This will scale up to 10+ servers. So opening a connection for each one, due to the connection overhead, slows the whole process down to much. Hence why we are using a single persistent connection open between the two servers.

I'm not overly familiar with pipes beyond using for logging type stuff. Can they facilitate a request/return type system to an already running script?

In reply to Re^2: Constant communication between processes by citycrew
in thread Constant communication between processes by citycrew

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