When to Adopt a Sphinx!

This talk is for those who want to know the technical what, when, where and why of choosing a search engine for SQL/NoSQL database solutions. It will assist individuals and businesses in developing a technical framework to answer the typical questions that one encounters when choosing a search option. Such as, do I need/want to add a search component to my architecture, how should one go about choosing a search engine and when does a commercial or open source search engine make sense for me/my business?

Talk topics/outline:
a.) I have a database, do I need a search engine?
b.) Where could one benefit from the use of a search engine.
c.) How to choose your search engine, and what to do if Sphinx is the right choice.
d.) What are the general options, a quick review of pros and cons of SQL/NoSQL full-text search vs. search engines
e.) Suggestions why and when to choose commercial or open source solutions (Lucene/Solr, Sphinx, Elastic Search)
f.) Quick kick-off on what's next if the choice is the Sphinx.