For our system database[0] I am using BoltDB. It is a search engine with the database updated nearly in batch, so write performance is a non issue. The Go/BoltD

For our system database[0] I am using BoltDB. It is a search engine with the database updated nearly in batch, so write performance is a non issue. The Go/BoltDB custom index has been running without any issues under moderate load for 2 years and the performance is great (a molecule information page can be delivered in less than 50ms to the end user at 99.9% percentile). So, you should really test your read/write ratio with the size of the keys and payloads before selecting one solution or another. Even on the Badger tests, you can see that it can vary a lot. [0]: https://www.chemeo.com https://www.chemeo.com