mCaptcha Cache

Redis module that implements leaky bucket algorithm

[![dependency status](https://deps.rs/repo/github/mCaptcha/cache/status.svg)](https://deps.rs/repo/github/mCaptcha/cache) [![AGPL License](https://img.shields.io/badge/license-AGPL-blue.svg?style=flat-square)](http://www.gnu.org/licenses/agpl-3.0) [![Chat](https://img.shields.io/badge/matrix-+mcaptcha:matrix.batsense.net-purple?style=flat-square)](https://matrix.to/#/+mcaptcha:matrix.batsense.net)

## Motivation [mCaptcha](https://github.com/mCaptcha/mCaptcha) uses a [leaky- bucket](https://en.wikipedia.org/wiki/Leaky_bucket)-enabled counter to keep track of traffic/challenge requests. - At `t=0`(where `t` is time), if someone is visiting an mCaptcha-protected website, the counter for that website will be initialized and set to 1. - It should also automatically decrement(by 1) after a certain period, say `t=cooldown`. We call this cool down period and is constant for a website. - If at `t=x`(where `x

```