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

hellojoe

v1.0.0

Published

Robust automated worker processes in the spirit of Erlang

Downloads

2

Readme

Hello Joe

Hello Joe is built on top of Node's cluster module to manage worker processes. It allows you to write your application in a vaguely Erlang like style, where if something goes wrong, crashing the whole process is the acceptable and preferred way of handling it.

Usage

Call hellojoe.serve with a configuration object (can be null, the defaults are OK) and a function containing your main application code. It should be the first and only thing your application does. Do not initialise any resources before calling this function. The worker processes will run your function, and anything outside of it gets run by both worker processes and the master process. You don't want the master process to do any work other than starting worker processes.

Thanks to the cluster module, any network sockets your subprocesses initialise will be shared between them.

var hellojoe = require("hellojoe");

hellojoe.serve({}, function app() {
   /// my application code goes here
});

Hello Joe will launch a number of subprocesses running the provided function, and the master process will be left in charge of monitoring them and restarting them as necessary.

The configuration object you provide is merged with these default values:

{
  // n == the physical number of cores on the running machine
  cores: n,
  // minimum lifetime (ms) of a process not considered a failure
  failureThreshold: 5000,
  // amount of consecutive failures before retryDelay is triggered
  retryThreshold: 23,
  // delay (ms) before spawning processes after consecutive failures
  retryDelay: 10000,
  // optional filename to execute as worker process, replacing the function
  worker: null,
  // if worker is specified, command line arguments can be provided
  workerArgs: []
}

Please note that if you specify a worker script, it will be executed using the child_process module, not the cluster module, meaning that sockets won't be automatically shared between worker processes.

License

Copyright 2014 Future Ad Labs Ltd

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0.

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.