Minimum Hardware System Requirements of Rauthy

[tarnishablec]

I am choosing a cloud server to test rauthy,what is the Minimum Hardware Requirements ? ** GB RAM and ** core cpu?

[sebadob]

You can run it easily on a single core with less than 100MB of memory, if you have a small user count and configure it properly.

Take a look at the Tuning section in the book. Especially tuning the Memory Allocator at the bottom can make a huge difference regarding memory usage. If you want to use the lowest possible amount of memory, make sure to adjust the cost for hashing to the minimum as well:

[hashing]
argon2_m_cost = 32768
argon2_p_cost = 2
max_hash_threads = 1

You only need more resources, if you have higer degrees of concurrency, or if you want to boost the limits for password hashing, which will usually be your limiting factor in terms of resources. You can compensate lower m_cost values with higher t_cost to a degree in terms of security.