hassansin

XDebug

A PHP extension that allows you to:

1. walk through your code by Remote Debugging
2. find bottlenecks in your application by Profiling
3. find Code Coverage in a single request
4. trace your application by logging all function calls

hassansin

Model::

  /*Select*/
  select('col1','col2')
  ->select(array('col1','col2'))
  ->select(DB::raw('businesses.*, COUNT(reviews.id) as no_of_ratings, IFNULL(sum(reviews.score),0) as rating'))  
  ->addSelect('col3','col4')
  ->distinct() // distinct select
  
  /*From*/

hassansin

package main

import (
	"errors"
	"fmt"
	"math/rand"
	"net/http"
	"sync"
	"time"

hassansin

Working With MongoDB TTL Index

https://hassansin.github.io/working-with-mongodb-ttl-index

hassansin

#!/bin/sh

# If commit message does not refer to any CH story number,
# this hook will parse the CH story from the current branch and 
# append it to the commit message
# 
# Example:
# Branch: hassansin/ch1643/custom-subdomains
# commit message: add support for EU base urls
# appended commit message: Add support for EU base urls [ch1643] 

hassansin

ab                \
-n 1000           \
-c 20             \
-s 30             \
-p post-data.txt  \
-T 'application/x-www-form-urlencoded; charset=UTF-8'   \
-v 3              \
-H "X-Requested-With: XMLHttpRequest"   \
-H "X-Ajax-Referer: http://example.com" \
-H "Accept-Encoding: gzip, deflate"   \

hassansin

/*
Creating Asynchronous Readable Stream in NodeJS
--------------------------------------------------------

When data is pushed asynchronously to internal buffer, you'll get an asynchronous 
behaviour of the stream. 

See Synchronous Version: https://gist.github.com/hassansin/7f3250d79a386007ce45
*/
var Readable = require("stream").Readable;

hassansin

db.collection.createIndex( { orderDate: 1, zipcode: -1 }, {background: true} )
db.events.ensureIndex( { "timestampISO": 1 }, { expireAfterSeconds: 120*24*60*60 } ) // <3.0, TTL index, 120day retention period
db.collection.getIndexes() //get all indexes
db.collection.dropIndex("name"); //drop single index
db.collection.dropIndexes(); //drop all indexes
db.collection.find({ email: 'test@sendgrid.com' }).explain("executionStats") // <3.0 : https://docs.mongodb.org/manual/reference/method/cursor.explain/#cursor.explain
//https://docs.mongodb.org/manual/tutorial/measure-index-use/
db.collection.explain("executionStats").find({ email: 'test@sendgrid.com' }) // 3.0 +
db.events.totalIndexSize() // in bytes, should not exceed RAM

hassansin

/*
Creating Synchronous Readable Stream in NodeJS
--------------------------------------------------

When data is pushed synchronously to internal buffer, you'll get the synchronous 
behaviour of the stream. This would block the rest of the code from being executed in 
the next event loop iteration.

In the example setImmediate should be called immediatley in next event loop iteration. 
But since the stream is synchronously reading data, it can't execute other callbacks.

hassansin

# ~/.bashrc: executed by bash(1) for non-login shells.
# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
# for examples

# If not running interactively, don't do anything
case $- in
    *i*) ;;
      *) return;;
esac