Everyone else is so hyped about elasticsearch. I tried it. It's meh.
It's not clear how to make it not to consume 100% of your memory. Oh yeah, it was designed to take 100% RAM of the container - super obvious, yeah.
It's not easy to collect only basic CPU and RAM metrics from 50 machines and not exceed 200 GB of that data in 1 month.

What they don't tell, it's just a product built on top of open source project - Apache Lucene

https://lucene.apache.org/core/10_3_2/index.html

Could be a replacement for Algolia.

Totally local search engine

Software	May fit on Pi	For...
Kiwix	Specifically designed for offline browsing of ZIM files	Wikipedia and Stack Overflow (pre-packaged zim archives).
Meilisearch	Written in Rust; very fast, low RAM usage	custom small-to-medium datasets.
Typesense	Written in C++; memory-efficient and faster than Meilisearch for large datasets (?).	searches over larger document sets.