tonyc

Using strace and lsof to debug blocked processes

You can use strace on a specific pid to figure out what a specific process is doing, e.g.:

strace -fp <pid>

You might see something like:

select(9, [3 5 8], [], [], {0, 999999}) = 0 (Timeout)

Ocramius

<?php

use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;

/**
 * @ORM\Entity()
 * @ORM\Table(name="user")
 */
class User

rantav

A few show tricks to find slow queries in mongodb

Enable profiling

First, you have to enable profiling

> db.setProfilingLevel(1)

Now let it run for a while. It collects the slow queries ( > 100ms) into a capped collections, so queries go in and if it's full, old queries go out, so don't be surprised that it's a moving target...

jvandyke

# ~/.gitconfig
# Add this to your global git configuration file
# Change phpstorm to webstorm, if you use that.

# Diff and merge tool changes
# Run `git difftool <directory/file>...` or `git mergetool <directory/file>...`
[merge]
	tool = phpstorm
[diff]
	tool = phpstorm

nikic

New features in PHP 5.5

This is only a summary. For a full list of changes see the NEWS file.

Feature	RFC / announcement	Author
Bundled ZendOptimizer+ as OPcache	https://wiki.php.net/rfc/optimizerplus	zeev

JeffreyWay

alias gundo='git reset HEAD~ && git clean -df'

joeyAghion

var collectionNames = db.getCollectionNames(), stats = [];
collectionNames.forEach(function (n) { stats.push(db[n].stats()); });
stats = stats.sort(function(a, b) { return b['size'] - a['size']; });
for (var c in stats) { print(stats[c]['ns'] + ": " + stats[c]['size'] + " (" + stats[c]['storageSize'] + ")"); }

razius

#!/bin/bash
#
# Watches the folder or files passed as arguments to the script and when it
# detects a change it automatically refreshes the current selected Chrome tab or
# window.
#
# http://razius.com/articles/auto-refreshing-google-chrome-on-file-changes/
#
# Usage:
# ./chrome-refresh.sh /folder/to/watch /some/folder/file_to_watch.html

Im0rtality

In host:

1. Go to PHPStorm Settings > Project settings > PHP > Servers
2. Add server with following parameters:
   • Name: vagrant (same as serverName= in debug script)
   • Host, port: set vagrant box IP and port
   • Debugger: Xdebug
   • [v] Use path mappings
   • Map your project root in host to relative dir in guest

• Hit OK

tmarshall

var AWS = require('aws-sdk');

AWS.config.update({
  accessKeyId: '{AWS_KEY}',
  secretAccessKey: '{AWS_SECRET}',
  region: '{SNS_REGION}'
});

var sns = new AWS.SNS();