A Redis-backed implementation of tokenthrottle
Simply wraps tokenthrottle with a Redis back-end, so you can use it across multiple servers/processes.
// Create a redis client
var redisClient = require("redis").createClient()
// Create a throttle with 100 access limit per second.
var throttle = require("tokenthrottle-redis")({rate: 100, expiry: 86400}, redisClient)
// in some_function that you want to rate limit
throttle.rateLimit(id, function (err, limited) {
/* ... handle err ... */
if (limited) {
return res.next(new Error("Rate limit exceeded, please slow down."));
}
else {
/* ... do work ... */
}
})Accepts all of the same options as tokenthrottle, plus two extra:
- expiry: {Number} Number of seconds after which untouched tokens will be expired, to save memory in Redis. (defaults to no expiry)
- prefix: {String} An optional string to prefix throttle keys with in redis, default is "redisThrottle"
(The MIT License)
Copyright (c) Bryce B. Baril bryce@ravenwall.com
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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