I know that an official doc is not that impressive as some author's article. However, it contains a lot of useful information. Also, sometimes you have to refer to docs like this one.
Moreover, Vault is not that simple as it seems. For example, many people think that Vault is HA if you have multiple hosts, which is not in fact true, unless you have an enterprise version. Otherwise, it's just an active leader and stand by hosts.
Also, Vault's performance is very dependent on its storage backend. Therefore, tuning can also be related to that. For example, you can tweak
max_parallel option if you're using AWS S3 as a backend and hitting AWS API rate limiting.Also, I would be very glad if you can share some materials about Vault load testing with different storage backends. I've heard that PostgreSQL is the most performant, but I have no data or a research to prove it. Would be nice to read one.
After a super-quick research, I was only able to find this article on how to setup benchmark tests for Vault.
Although, here's a benchmark for Vault's integrated storage
#hashicorp #vault #performance
