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

cruorin

v4.2.0

Published

A light extensible HTTP GET reverse proxy cache server.

Downloads

21

Readme

Cruorin

Build Status Coverage Status

Cruorin is a lightweight extensible cache proxy server.

cruorin1

Cruorin provides an efficient proxy mechanism by throttling concurrent requests in one request window. Also Cruorin exposes necessary hooks to control the proxy flow and cache policy. All hooks only operate simplified object of request and response called IncomingMessage and OutgoingMessage.

Cruorin only proxy and cache GET requests. Cache will be persisted by writing to file and cache key is hash of incoming message URL with host.

Usage

install as dependency

npm install --save cruorin

specify policies of proxy & cache

const { Server } = require('cruorin');

class MyServer extends Server {
  reviseRequest(message) {
    // => localhost:9999/?ts=1
    // infer upstream
    message.headers.host = message.headers.host.replace('9999', '8080');
    // remove timestamp
    message.url = message.url.replace(/\??ts=[^&]+&?/, '');
    // <= localhost:8080/
    return message;
  }
}

const server = new MyServer();
server.listen(9999);

API

cruorin2

reviseRequest(message): message

Required.
reviseRequest is invoked before transmitting message.
Cruorin will use revised incoming message to emit request and generate internal request hash as cache key.

willApplyCache(message): boolean

Optional, default true.
willApplyCache is invoked before reading and writing cache.
true means that responses will be cached permanently.

willAwaitReply(message): boolean

Optional, default true.
false means that Cruorin will NOT wait for upstream and output a temporary message immediately before upstream responding.

Benchmark

The following table shows QPS of high concurrency simple request in 20 seconds.
The stress test tool is wrk.

(2020/05/29, MacBook Pro 2019)

brew install wrk
npm run play

# 3000 is a fast server
wrk -t 4 -c 300 -d 20 http://localhost:3000

# 3001 is a slow server with 1000ms latency
wrk -t 4 -c 300 -d 20 http://localhost:3001

# 3002 is a crourin server to 3001
wrk -t 4 -c 300 -d 20 http://localhost:3002

|name|QPS| |-|-| |fast|39700| |slow|230| |cruorin|28800|