When is Memcached required?

I'm building a site that I hope will achieve the same sort of traffic as SO.

I know early opti开发者_如何转开发misation is the root of all evil and all but I keep telling myself that I have to have a caching strategy baked into the design.

I'm using the LAMP stack and to begin with I'll be doing everything on one dedicated server.

Do you think it's not worth the effort to incorporate Memecahced into the project from day one?

Thanks

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Definetely worth the effort!

Once your website starts scaling really fast, it will be very hard for you to only then start taking care of all the big scalability problems.

...Besides, Memcached is very easy to implement!

:)