Redis::RateLimit - Sliding window rate limiting with Redis
version 1.0002
use Redis;
use Redis::RateLimit;
my $rules = [
{ interval => 1, limit => 5 },
{ interval => 3600, limit => 1000, precision => 100 },
];
my $redis_client = Redis->new;
my $limiter = Redis::RateLimit->new(
redis => $redis_client,
rules => $rules,
);
for ( 1..10 ) {
say 'Is rate limited? ', $limiter->incr('127.0.0.1') ? 'true' : 'false';
};
Output:
Is rate limited? false
Is rate limited? false
Is rate limited? false
Is rate limited? false
Is rate limited? false
Is rate limited? true
Is rate limited? true
Is rate limited? true
Is rate limited? true
Is rate limited? true
A Perl library for efficient rate limiting using sliding windows stored in Redis.
This is a port of RateLimit.js without the non-blocking goodness.
- Uses a sliding window for a rate limit rule
- Multiple rules per instance
- Multiple instances of RateLimit side-by-side for different categories of users.
- Whitelisting/blacklisting of keys
See this excellent articles on how the sliding window rate limiting with Redis works:
For more information on the `weight` and `precision` options, see the second blog post above.
- Port the middleware for Plack
Redis client. If none is provided, a default is constructed for 127.0.0.1:6379.
A prefix to be included on each redis key. This prevents collisions with multiple applications using the same Redis DB. Defaults to 'ratelimit'.
Set this to a true value if using a Redis client that supports transparent prefixing. Defaults to 0.
An arrayref of rules, each of which is a hashref with interval, limit,
and optionally precision values.
Returns true if any of the keys are rate limited.
Returns true if any of the keys are rate limited, otherwise, it increments counts and returns false.
Returns all of the rate limiter's with prefixes removed.
Returns a list of rate limit rules violated for any of the keys, or an empty list.
Returns a list of limited keys.
Adds the keys to the whitelist so they are never rate limited.
Removes the keys from the whitelist.
Adds the keys to the blacklist so they are always rate limited.
Removes the keys from the blacklist.
Marc Mims [email protected]
This software is Copyright (c) 2016 by Marc Mims.
This is free software, licensed under:
The MIT (X11) License