Solr is highly reliable, scalable and fault tolerant, providing distributed indexing, replication and load-balanced querying, automated failover and recovery, centralized configuration and more.

In a recent client project (most of my good ideas come from solving client problems), I had the dilemma of exposing an entity reference with-in a standard Drupal FAPI form. It needed to have auto complete functionality to search for a Commerce Product by SKU.

Here's the requirements. You have a parent-child relationship (one-to-many) between two content types. There are three media related fields on these content types. Your assignment is to display the first populated field in a block for a panels managed page.

In a recent project, we had some non-Drupal content that needed to be indexed so we could expose that content to the apachesolr module for indexing with all the rest of Drupal created content.