Now OneFeed has a tag cloud, more responsive UI across desktop and phone browsers. Also performance of this site is improved a bit.
First of first to implement a responsive UI,
<meta name="viewport" content="width=device-width, initial-scale=1.0">
For others like
@media query and relative width, this doc from Google is helpful.
Most ORM frameworks like JPA and ActiveRecord have N+1 queries problem, because they fetch associations lazily.
The tag strings on the index page of OneFeed was loaded lazily when the ERB file was rendering,
which caused a typical N+1 queries problem.
includes method to eagerly load associations, which reduces queries to 2 times.