I am getting some traffic on my blog but my webhost Dreamhost is having issues dealing with the traffic, it is not that much but they have made some changes to their VPS now each time my sites cross the allocated memory limit, their system halts it down, my site becomes inaccessible for a few minutes and comes back again. I am trying to resolve this issue with them, but recently quality of their support has also declined significantly. I am using wp-supercache to serve my sites in preload mood.
Now I need to find a related posts plugin that is not heavy on the memory usage. I have previously used Efficient Related Posts, but I am not satisfied with the matches. I have noticed that it stores related posts ordered by IDs now lets say if you store and display 5 posts it will pick the oldest posts to display first. Which kills the purpose of serving related posts.
I want to show similar but newer results first. Also it would be best if the plugin could also show thumbnail images.