[](https://travis-ci.org/lrascao/raterl)
# raterl
Erlang flow control application heavily inspired in `jobs` and `ratx`,
ETS based bypasses the `jobs_server` single process bottleneck while
providing `rate` and `counter` flow control.
## Supports
## TODO
* Queues
* Modifiers
## Examples
### Rate flow control
A typical use case is restricting the number of logins per second
on a system, you'd start by the configuration:
```erlang
[{raterl, [
{queues, [
{login_requests, [
{regulator, [
{name, max_login_rate},
{type, rate},
{limit, 100} %% ensures that we get no more than x logins per second
]}
]}
]}
]
}].
```
Then on the code you ask permission from `raterl` before accepting a login:
```erlang
case raterl:run(login_requests, {rate, max_login_rate}, fun () -> Ret end) of
limit_reached ->
{error, throttled};
Ret -> Ret
end;
```
Build
-----
$ rebar3 compile
