May 14, 2011 at 4:58 AM
Edited Oct 24, 2011 at 9:44 PM
If you have under 100 posts (or/and) pages go with XML
Over that it starts to slow down.
Also the number of (Hits/Visits) has an effect too. If you get over 100 hits at the same time all the time then Database would be better.
But, if you get about 50 or less hits at the same time xml is good.
See for your self here:
Which approach is good for a business/corporate blog..]
It all depends on the factors listed above (Amount of data you have + The number of visits you get at one time)