livejournal cache

[Brad Fitzpatrick]

Nearly every page on LiveJournal is served entirely from memcached.


On Tue, 7 Jun 2005, Cahill, Earl wrote:

> Just pondering writing a system with what I call a perfect cache, where
> every write wipes appropriate cache stuff, and every read generates the
> cache.  It seems like such a system would allow for having nearly every hit
> pulling from memcache, where only the first hit generates the memcache.  You
> could even have the write generate the memcache if you can show that writes
> generally lead to reads.
>
>
>
> Anyway, my question is, does livejournal already do this?  Do they actually
> serve me hitting my blog directly from memcache?  Looking at this page
>
>
>
> http://www.livejournal.com/stats.bml <http://www.livejournal.com/stats.bml>
>
>
>
> I see 348,891 updating their site in the past twenty-four hours, I wonder if
> even just a few memcache boxes would be able to keep up with serving all the
> text content in perfect cache fashion, with a ttl of say a few hours, saving
> countless hits top the db.
>
>
>
> I was at the oscon talk last year, and it was likely covered, but I don't
> remember every detail.  For me, best talk at the conference.  If it is not
> being done, I think it is worth looking into.
>
>
>
> Earl
>
>