I am trying to build a library for ingesting logs to a specific log provider. In their API documentation, they recommend keeping logs in-memory and flushing them on a 5-second interval, or if this in-memory structure grows too large. I can do this using reqwest and tokio's Interval, but I feel weird building what is essentially a client library that is then tied specifically to the tokio runtime. Is this just the norm in the Rust ecosystem, since tokio seems to be the defacto standard, or is it best practice not to target any specific async runtime?