On 19-4-2010 14:19, Brian Moon wrote:
Oh, the FUD of SEO "plugins". They have you by the nuts now. Never
ever change anything, or you will fall off of Google.
But it really isn't a good idea to just throw away all old urls without
at least a redirect to the new ones. That obviously doesn't mean
you're stuck with whatever situation you're in, but its a very good idea
to make sure old url's still work and redirect to new ones properly.
If the site is down, you won't show up on Google either.
Actually, that's not entirely true :-P At least, afaik you'll be shown
in the results as long as they deem you're site relevant, whether or not
it works properly at that time or not. Its obviously not very useful to
be shown in the results and then loose the visitor because you're site
is too slow.
But anyway, this group is about memcached, site performance and the
various forums has their own mailing lists.
For the original thread: Its not very useful to have a 64MB memcached
and only have 128KB in it, but if it are (very) expensive numbers to
calculate, it can be a big gain already. We have quite a large forum
(more than 60GB in on-disk database size), but only cache relatively
small amounts of its data in memcached, the rest is left up to MySQL and
its internal caches.
I'm not really sure how much data we store in memcached for the forum
specifically, but its mostly stuff about the configuration, categories,
user groups and things like that. Forumdiscussions are pretty hard to
cache effectively, while they normally don't require expensive queries
on your database, so if the database can keep up, I wouldn't worry too
much about it. Or at least, we have a very large long tail of
discussions that get only visited a few times a day (with Google's
crawler being the main reason that get visited at least once every few
days).
Best regards,
Arjen
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