2 releases
0.1.1 | Oct 30, 2024 |
---|---|
0.1.0 | Oct 30, 2024 |
#575 in Algorithms
311 downloads per month
Used in chokepoint
29KB
415 lines
Burster ⏩
Burster is a high quality and lightweigh crate providing stack allocated rate limiters with minimal dependencies.
Guaranteed to work on no_std
targets, but also comfortable on standard targets.
Supported rate limiter types
- Token bucket
- Fixed window
- Sliding window log
- Sliding window counter
- ..something else? Make a request or open a PR :)
Usage
On std
targets usage is simple. Install the crate with default features enabled and
you'll get access to straightforward utility functions for instantiating limiters.
// Instantiate a token bucket that allowes an average consume
// rate of 100 tokens per second and with bucket_size = 10
let mut bucket = burster::token_bucket(100, 10);
// Use the bucket:
if bucket.try_consume_one().is_ok() {
// All good, enough tokens left
} else {
// Not enough tokens for this consume
}
On no_std
targets you'll have to install the crate with default features disabled and
provide bindings to your platforms clock functionality in the form of a closure that returns
the current timestamp as Duration
from some fixed epoch in the past.
// Instantiate a token bucket that allowes an average consume
// rate of 100 tokens per second and with bucket_size = 10
let mut bucket = burster::TokenBucket::new_with_time_provider(100, 10, || {
// Return current timestamp
Duration::from_micros(get_platform_micros_from_boot())
});