PUBLIC MARKS with tags query & performance

ElasticSearch's new "Percolator" feature, which enabled to index queries and find which documents match them : instead of sending docs, indexing them, and then running queries, one sends queries, registers them, and then sends docs and finds out which queries match that doc.

Litenode is a new module that uses Views to replace multiple node_loads() on a page. The largest source of queries on a page is almost always node_load(). It can push your query count very high, since each node has multiple queries run. That means that there tends to be a nearly linear relationship between the number of nodes on the page and the number of queries.