npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

@npm/spife-ratelimit

v2.0.1

Published

Middleware that adds [Token Bucket]-style ratelimiting to [Spife].

Downloads

8

Readme

spife-ratelimiter

Middleware that adds Token Bucket-style ratelimiting to Spife.

// settings.js:
module.exports.MIDDLEWARE = {
  ['@npm/spife-ratelimiting', {
    redisUrl: 'redis://localhost:6379', // let it connect to redis
    redisClient,                        // (or give it a client)

    costHeader: 'npm-cost',             // the "cost" header to use
                                        // for determining how many
                                        // tokens a request took

    clock: Date.now,                    // if you would like time to
                                        // move to the beat of a
                                        // different drum

    getBucket (spifeRequest) {          // given a request, return
                                        // an object describing its
                                        // token bucket
      return {
        capacity: 100,                  // how many tokens does
                                        // the bucket hold?

        interval: 60,                   // in minutes, how long
                                        // does the bucket take to
                                        // fill up?

        key: String                     // what should the bucket be
                                        // named?
      }
    }
  }]
}

// views.js:
const reply = require('@npm/spife/reply')
const cost = require('@npm/spife-ratelimiter/decorator')

module.exports = {
  // a view can declare how much it costs up-front:
  index: cost(index, 5),
  other
}

function index (req, context) {
  return 'I cost five tokens!'
}

function other (req, context) {
  return reply.header(
    'I cost a hundred tokens sometimes',
    'npm-cost',
    Math.random() > 0.5 ? 100 : 0
  )
}

This is implemented in redis by keeping two keys per bucket: one that tracks the current number of tokens, and one that tracks the last update time. Both keys are expired at interval, and updated atomically using a Lua script.