> that can be deployed over a cheap hardware like RPi, or an old android phone. Power usage will dominate hardware costs, making that hardware expensive, not c

> that can be deployed over a cheap hardware like RPi, or an old android phone. Power usage will dominate hardware costs, making that hardware expensive, not cheap, probably more expensive than hardware designed to run 24/7 in a data center. > build a search engine like Google (including in terms of quality, reliability and following web standards). You won’t get reliability from “an old android phone” > what challenges I may face since starting or deploying in production. Buy a napkin first, and use it to make some calculations. Starting numbers: according to https://blog.hubspot.com/marketing/google-search-statistics https://blog.hubspot.com/marketing/google-search-statistics, Google handles about 250k queries per second. https://zyppy.com/seo/google-index-size/ https://zyppy.com/seo/google-index-size/ They have an index with 400 billion documents.