I recently wrote that Solr can be populated from json without any pre-configuring or pre-defining of data fields and data structures. This feature is very handy. It permits injecting a lot of data without knowing the full structure of it, and having Solr tell you about the structure once it is imported, so that you can decide on it with a certain support.
Many, many years ago, I made an internet search engine. I was working in a company where we used Rebol in some projects, and I had fun creating a crawler that looked up pages on the internet containing the word rebol. It collected the contents of such web pages and put it in a MySQL database with full-text indexing.
This was «The RIX»: A search engine written in Rebol, indexing Rebol sites only. I remember I felt a bit proud when Carl Sassenrath mentioned it on his blog. He wrote that it was smart:
you can ask it to search…
TellusR community manager @ Sannsyn