[dw-free] optimize viewing entries with large # of comments

[fu]

[commit: http://hg.dwscoalition.org/dw-free/rev/3902f52fa21e]

http://bugs.dwscoalition.org/show_bug.cgi?id=4315

Add comment warning future coders against trying to make the code pretty.

Patch by fu.

Files modified:

• cgi-bin/LJ/Talk.pm

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diff -r 064d26890498 -r 3902f52fa21e cgi-bin/LJ/Talk.pm
--- a/cgi-bin/LJ/Talk.pm	Fri Feb 10 03:54:52 2012 +0000
+++ b/cgi-bin/LJ/Talk.pm	Fri Feb 10 12:28:11 2012 +0800
@@ -739,6 +739,7 @@
 
         # find all singletons that LJ::Comment knows about, then grep for the ones we've set in
         # this get_talk_data call (ones for this userid / nodeid)
+        # note: This is a heavily-used path. The hash lookup on nodeid is a deliberate optimization
         my $uid = $u->userid;
         LJ::Comment->preload_rows();
         my @comments_for_entry =
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