Can I have each consumer receive the same messages? Ie, both consumers get message 1, 2, 3, 4, 5, 6? What is this called in AMQP/RabbitMQ speak? How is it normally configured? No, not if the consumers are on the same queue. From RabbitMQ’s AMQP Concepts guide: it is important to understand that, in AMQP … Read more
It doesn’t matter if the token was created on another server. You can still verify it if you have the right secret key and algorithm. Implementation with jsonwebtoken module client const {token} = sessionStorage; const socket = io.connect(‘http://localhost:3000’, { query: {token} }); Server const io = require(‘socket.io’)(); const jwt = require(‘jsonwebtoken’); io.use(function(socket, next){ if (socket.handshake.query … Read more
next() with no arguments says “just kidding, I don’t actual want to handle this”. It goes back in and tries to find the next route that would match. This is useful, say if you want to have some kind of page manager with url slugs, as well as lots of other things, but here’s an … Read more
In a nutshell, the syntax for Bower version numbers (and NPM’s) is called SemVer, which is short for ‘Semantic Versioning’. You can find documentation for the detailed syntax of SemVer as used in Bower and NPM on the API for the semver parser within Node/npm. You can learn more about the underlying spec (which does … Read more
You can do something like: module.exports = { method: function() {}, otherMethod: function() {}, }; Or just: exports.method = function() {}; exports.otherMethod = function() {}; Then in the calling script: const myModule = require(‘./myModule.js’); const method = myModule.method; const otherMethod = myModule.otherMethod; // OR: const {method, otherMethod} = require(‘./myModule.js’);
The difference between –save and –save-dev may not be immediately noticeable if you have tried them both on your own projects. So here are a few examples… Let’s say you were building an app that used the moment package to parse and display dates. Your app is a scheduler so it really needs this package … Read more
This error is simple, cd /tmp mkdir dir node -e “var fs = require(‘fs’); fs.createReadStream( ‘dir’ );” EISDIR means that the target of the operation is a directory in reality but that the expected filetype of the target is something other than a directory.
If you are using node.js then u should use https://github.com/caolan/async when you have to fetch data from multiple collections you have to chain your queries multiple times. It will make your code complex and difficult to read and no modularity. Use async to create modularity using mongodb and node.js Example Code from my project : … Read more
I’m not aware of an option that would upsert into an embedded array as at MongoDB 2.2, so you will likely have to handle this in your application code. Given that you want to treat the embedded array as sort of a virtual collection, you may want to consider modelling the array as a separate … Read more
Something like this should work: var express = require(‘./node_modules/express’); var app = express.createServer(); app.use (function(req, res, next) { var data=””; req.setEncoding(‘utf8’); req.on(‘data’, function(chunk) { data += chunk; }); req.on(‘end’, function() { req.body = data; next(); }); }); app.post(“https://stackoverflow.com/”, function(req, res) { console.log(req.body); }); app.listen(80);