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Full Discussion: Figuring out Crons
Top Forums UNIX for Dummies Questions & Answers Figuring out Crons Post 302140479 by eightgames on Friday 12th of October 2007 05:48:39 PM
Old 10-12-2007
Question Figuring out Crons

Hello,

I've built a news site using SimplePie to pull in a set of feeds and display them on a page. The caching is working but the problem is that the first initial load is slow. After that, you can hit refresh and it loads very quickly. I'd like to eliminate that first slow load by creating a cronjob, which is what I've heard many other people do. I'm very new to crons and programming in general so hopefully someone can help me understand this.

I found one example of a guy using the following cron to automatically visit his page and he syncronized the cache duration, thus eliminating any slow starts:

Code:
0,15,30,45 * * * * wget -q --spider http://thewebsite.com

The problem I found was that my host doesn't support wget (or lynx, or ssh) so I've been trying to write a cron that will achieve the same results but using either curl or php. Here is what I have so far:

Code:
*/15 * * * * curl --silent --compressed http://www.mysite.com/index.php

Code:
*/15 * * * * php /home/username/public_html/index.php

Again, I found these examples from reading other resources so I'm not entirely sure what they're doing or if they're correct for my situation. I've also set the cache duration to match at 15 minutes. When I run either the curl or php cron above, in my e-mail I receive the entire html source for the specified index.php. I'm assuming this means they're working correctly, but still my news page has that initial slow load. I'm open to any thoughts or ideas. Thanks in advance.
 

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RC.NEWS(8)						    InterNetNews Documentation							RC.NEWS(8)

NAME
rc.news - Start or stop INN daemons SYNOPSIS
rc.news [start | stop] DESCRIPTION
rc.news can be used to start or stop innd and supporting programs. It checks to make sure INN is not already running, handles cases of unclean shutdown, finishes up tasks which might have been interrupted by the preceding shutdown, e-mails certain boot-time warnings to newsmaster (as set in inn.conf), and is generally safer and easier than starting and stopping everything directly. It needs to be run as the news user so that files in pathrun are created with the right ownership (though this is less important for "rc.news stop"). Programs run and stopped by this script include: o Always: innd is started or stopped. o If doinnwatch is true in inn.conf: innwatch is started and stopped. o If docnfsstat is true in inn.conf: cnfsstat is started and stopped. o If ovmethod is set to "ovdb" in inn.conf: ovdb_init is run; ovdb_server and ovdb_monitor are stopped. o If rc.news.local exists in pathbin: rc.news.local is run with argument "start" or "stop" (to perform site-specific startup or shutdown tasks). OPTIONS
"start" If the first argument is "start", or no first argument is given, rc.news initiates INN startup. "stop" If the first argument is "stop", rc.news initiates INN shutdown. It is recommended to throttle the server first as described in ctlinnd(8). EXAMPLES
To start INN and leave certain error messages going to the terminal: su - news -c <pathbin in inn.conf>/rc.news To run INN at startup time from appropriate system boot scripts: su - news -c <pathbin>/rc.news >/dev/console To stop INN (throttling first): <pathbin>/ctlinnd throttle reason su - news -c '<pathbin>/rc.news stop' BUGS
Running "rc.news start" as root is never the right thing to do, so we should at minimum check for this and error, or perhaps change effective user ID. HISTORY
// FIXME: any attribution for rc.news itself? This manual page written by Jeffrey M. Vinocur <jeff@litech.org> for InterNetNews. $Id: rc.news.pod 9340 2011-08-16 13:50:19Z iulius $ SEE ALSO
ctlinnd(8), cnfsstat(8), inn.conf(5), innwatch(8), ovdb(5). INN 2.5.3 2011-08-22 RC.NEWS(8)
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