Another resource is a trigram search index (in Go) used by etsy/hound[0] based on an article (and code) from Russ Cox: Regular Expression Matching with a Trigra

Another resource is a trigram search index (in Go) used by etsy/hound[0] based on an article (and code) from Russ Cox: Regular Expression Matching with a Trigram Index[1]. [0] https://github.com/hound-search/hound https://github.com/hound-search/hound [1] http://swtch.com/~rsc/regexp/regexp4.html http://swtch.com/~rsc/regexp/regexp4.html Different use-cases for alternatives to Lucene depending on your needs.