Hello Andre,
Thanks for confirming. I also imagine that there's some kind of environmental variable that could be used as a token to distinguish among those instances of Revolution or the identity or addresses of the clients.
Greg
On Sep 24, 2004, at 7:19 PM, Andre wrote:
Gregory,
I think that's the way everyone is doing, I use a token file to signal the busy state, so when I need to see if another instance of Rev is working, I just look for that file...
Cheers andre
On Sep 24, 2004, at 2:16 PM, Gregory Lypny wrote:
Hello everyone,
In processing CGI requests, I understand that Revolution creates an instance of itself in memory for each request. I'm guessing that because of this, it may be possible for two or more clients to be accessing a text file almost simultaneously and create an update anomaly if they both share information and have privileges to edit it. It's the situation where I need information that you can change and you need information that I can change and you may change it to something else when I'm still looking at the old stuff perhaps making the wrong decision because of this.
I'm curious to know what you think of a rough and ready way to queue processing by having the CGI's access a file with a variable that is either "busy" or "not busy". The first request being processed sets it to "busy". If another client submits a request and the variable comes up "busy", their page will be refreshed, perhaps with a brief message, although it's probably not necessary given Rev's processing speed, and when the variable is set back to "not busy", the next client is processed. Sound reasonable, or is it too clunky?
Greg
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