Based on our record, Tile38 seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I actually worked on a project that did this. We used a database called "Tile38" [1] which used an R-Tree to make geospatial queries speedy. It was pretty good. Our dataset was ~150 GiB, I think? All in RAM. Took a while to start the server, as it all came off disk. Could have been faster. (It borrowed Redis's query language, and its storage was just "store the commands the recreate the DB, literally", IIRC. Dead... - Source: Hacker News / almost 2 years ago
OpenTSDB - OpenTSDB is a distributed, scalable Time Series Database (TSDB) written on top of HBase.
Redis - Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.
BuntDB - A fast, embeddable, in-memory key/value database for Go with custom indexing and geospatial support
VoltDB - In-memory relational DBMS capable of supporting millions of database operations per second
Aerospike - Aerospike is a high-performing NoSQL database supporting high transaction volumes with low latency.
PostGIS - Open source spatial database