| # | |
| # Copyright IBM Corp. All Rights Reserved. | |
| # | |
| # SPDX-License-Identifier: Apache-2.0 | |
| # | |
| version: '2' | |
| services: | |
| ca.org1.example.com: |
| // ./__mocks__/localStorage.js | |
| let mockStorage = {}; | |
| module.exports = window.localStorage = { | |
| setItem: (key, val) => Object.assign(mockStorage, {[key]: val}), | |
| getItem: (key) => mockStorage[key], | |
| clear: () => mockStorage = {} | |
| }; | |
| var accounts = [ | |
| { name: 'James Brown', msgCount: 123 }, | |
| { name: 'Stevie Wonder', msgCount: 22 }, | |
| { name: 'Sly Stone', msgCount: 16 }, | |
| { name: 'Otis Redding', msgCount: 300 } // Otis has the most messages | |
| ]; | |
| // get sum of msgCount prop across all objects in array | |
| var msgTotal = accounts.reduce(function(prev, cur) { | |
| return prev + cur.msgCount; |
# Get documents, where writters are Joel Coen and Ethan Coen.
db.movieDetails.find({ "writters" : ["Joel Coen", "Ethan Coen"] }).count()# Get documents, where Jeff Bridges is playing leading role.
> db.movieDetails.find({ "actors.0": "Jeff Bridges" }).pretty()
Ondrej Sika <[email protected]>
use DATABASE_NAME
#MongoDB 3.2.x Sharding Sharding is used when the database is too large to run on a single server and you need to spread the load across multiple servers. The name itself refers to the breaking (sharding) of the data into seperate groups of data which will reside on different servers.
##Configuration Server Start the server on your server (myserver0)
mongod --configsvr --dbpath /data
On myserver1 start the shard giving the configuration server as the --configdb option
| REM | |
| REM Setup a MongoDB Sharded Cluster | |
| REM | |
| REM Reference: http://cookbook.mongodb.org/operations/convert-replica-set-to-replicated-shard-cluster/ | |
| REM More Info: http://www.kchodorow.com/blog/2010/08/09/sharding-and-replica-sets-illustrated/ | |
| REM | |
| REM Download and Unpack MongoDB Software | |
| REM | |
| SET URL="https://fastdl.mongodb.org/win32/mongodb-win32-x86_64-2008plus-2.6.11.zip" |
| // sending to sender-client only | |
| socket.emit('message', "this is a test"); | |
| // sending to all clients, include sender | |
| io.emit('message', "this is a test"); | |
| // sending to all clients except sender | |
| socket.broadcast.emit('message', "this is a test"); | |
| // sending to all clients in 'game' room(channel) except sender |
fork_mode.js
var child_process = require('child_process');
var cpus = require('os').cpus();
var net = require('net');
var tcpSrv = net.createServer();
tcpSrv.listen(8000, function() {
for (var i = 1; i <= cpus.length; i++) {