Just another plug for Lucene or the library route. I had a simple use case to offer a search/autocomplete API for the employee directory of ~50,000 records. The

Just another plug for Lucene or the library route. I had a simple use case to offer a search/autocomplete API for the employee directory of ~50,000 records. The source of truth was only updated once a day. We ran a job that reindexed daily and published the index as a file (< 15 megabytes) to where the service could access it. That service worked beautifully. Results were returned in 10-20ms and we only ever made software updates to handle the occasional CVE. It did, however, take quite a bit of fiddling initially to get the query results to match the user expectations. For example, weighting first vs last vs full name.