I'm a big fan of FTS5 as a cheap/easy way of adding full text search to datasets.<p>Recently I've been storing these datasets in S3 and been querying them directly via a VFS[0]. Its a simple way to have FTS available to lambda functions without the cost of using an online database.<p>[0]: <a href="https://github.com/psanford/sqlite3vfshttp">https://github.com/psanford/sqlite3vfshttp</a>