flume VS trust-dns

The repository seems abandoned; or maybe complete?

At work we use flume, which is another capable multi-producer, multi-consumer async-capable channel [1]. It's great for shuffling data between threads, as well as between async tasks, and between threads and async tasks. Basically any time you want to pieces of code to exchange data or signals without pesky shared state.

1: https://github.com/zesterer/flume

I also like flume, it has impressive performance (although not the best). More importantly, it's written only with safe rust. https://github.com/zesterer/flume

The most commonly suggested replacement for mspc is crossbeam-channel; flume is also relatively popular.

It's not officially deprecated, but the alternatives on crates.io are considered better. flume and crossbeam-channel feature less unsafe code and offer better performance. Benchmarks.

it's slow (checkout flume's benchmarks for example)

I would have done the same. I think, and I might be wrong, but the only other alternative, besides anything unsafe, would be to pass mutex back, but I am not sure this would be faster. Btw, I have not done testing, but you might want to look at Flume for your mpsc channels: https://github.com/zesterer/flume Flume, seems to be very fast mpsc implementation. I am planning to evaluate it for logging system.

For concurrency/parallelism, you launch at most 2 * CPU Cores, PIN them and use a fast broker to spread the task (like a ring buffer or an MPSC). But you keep linear scan, tight loops, SIMD friendly data, on each. You are not switching context that much, and instead, bet you will process the batch fast. (CPUs are fast today!)

https://crates.io/crates/flume and https://crates.io/crates/crossbeam-channel provide MPMC channels.

If you don't know what is Trust-DNS / Hickory DNS, this seems to be the repo: https://github.com/bluejekyll/trust-dns

IO is not a part of the async runtime contract (I don't know if this is good or bad), and Tokio & futures famously have different `Async{Read,Write}` traits. I once had to do this [0] to adapt between them.

This means that any crate that uses IO will be bound to a limited number of Runtimes. Everything being Tokio-only is pretty bad (though Tokio itself is great), but here we are...

[0] https://github.com/bluejekyll/trust-dns/pull/1373#issuecomme...

I need a cert.pem and privkey.pem for https://github.com/bluejekyll/trust-dns but even using the extractor to get a cert.pem and privkey.pem from the acme.json file it seems invalid.

You might be interested in Trust DNS - "A Rust based DNS client, server, and Resolver, built to be safe and secure from the ground up."

It looks like you need to reach for a separate crate for that: https://github.com/bluejekyll/trust-dns/blob/7dcb7b983f5407d95d93b800af13caeee975aaa8/crates/async-std-resolver/src/lib.rs

You might be interested in new alternative to dig called dns https://github.com/bluejekyll/trust-dns/blob/main/util/src/dns.rs . I found out about it from https://twitter.com/benj_fry/status/1513269287229657091

I've found the Trust-DNS Resolver crate and it does the job! Now the binary seems to not use any dynamic library to look up the ip of a host.