fforbeck

StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
t.printStackTrace(pw);
sw.toString(); 

fforbeck

- Creating new index with ttl, the key must be date type and can not be a compound index.

> db.teste_ttl_idx.ensureIndex({ttl: 1}, {expireAfterSeconds: 5});

- Insert new documents
> db.teste_ttl_idx.insert({ttl: new Date()});
> db.teste_ttl_idx.insert({ttl: new Date()});
> db.teste_ttl_idx.insert({ttl: new Date()});

- You can do a find all to check if the elements were inserted and if they will be removed in the next 5 seconds after their creation.

fforbeck

1 - Make sure to set the Linux kernel overcommit memory setting to 1. Add vm.overcommit_memory = 1 to /etc/sysctl.conf and then reboot or run the command sysctl vm.overcommit_memory=1 for this to take effect immediately.

2 - Make sure to setup some swap in your system (we suggest as much as swap as memory). If Linux does not have swap and your Redis instance accidentally consumes too much memory, either Redis will crash for out of memory or the Linux kernel OOM killer will kill the Redis process.

3 - Connector Configs

  final int numClients = 150;
  final JedisPoolConfig config = new JedisPoolConfig();
		
  // Tests whether connection is dead when connection retrieval method is called

fforbeck

## Default setup: http://pkg.jenkins-ci.org/debian/

## Setup with oracle-jdk, mvn3, git, nginx and useful jenkins plugins

Remove OpenJDK first if installed by this command:
  sudo apt-get purge openjdk*

Then add the Webupd8 Team PPA repository and then reload the packages:
  sudo add-apt-repository ppa:webupd8team/java
  sudo apt-get update

fforbeck

db.website_performance.aggregate(
[
  { $match : { 'domain' : { $in: ['xxx.com','porntube.com']} } },
  { $group: {
      _id: '$domain',
      sum_impressions: { $sum: "$impressions" },
      sum_bids: { $sum: "$bids" },
      sum_clicks: {$sum: "$clicks"},
      sum_leads: {$sum: "$leads"},
      sum_actual_cost: {$sum: "$actual_cost"},

fforbeck

db.website_performance.aggregate(
[
    { 
      $match : { 'domain'  : { $in: []} }
    }, 
    {
      $group: { 
            _id: "$domain", 
            sum_impressions: { $sum: "$impressions" },
            sum_bids: { $sum: "$bids" } }

fforbeck

SELECT cfr.DATE, cfr.USER_ID, cfr.CAMPAIGN_ID, SUM(cfr.SPENT_BUDGET) + IFNULL(cfpr.ACTUAL_COST,0) AS SPENT_BUDGET 
	FROM CONSOLIDATE_FINANCIAL_REPORT cfr 
	LEFT JOIN CONSOLIDATE_FINANCIAL_PARTNER_REPORT cfpr on cfpr.CAMPAIGN_ID = cfr.CAMPAIGN_ID and cfpr.DATE = cfr.DATE
	WHERE cfr.DATE = '2013-03-26 00:00:00' AND cfr.USER_ID = 766
	GROUP BY 1,2,3 
	ORDER BY 1,2,3;

fforbeck

 public String normalize(String word) {
      
      if (word == null || word.trim().isEmpty())
         return word;

      word = word.replaceAll("[ÂÀÁÄÃ]", "A");
      word = word.replaceAll("[âãàáä]", "a");
      word = word.replaceAll("[ÊÈÉË]", "E");
      word = word.replaceAll("[êèéë]", "e");
      word = word.replaceAll("ÎÍÌÏ", "I");

fforbeck

db.website_performance.aggregate(
[
    {
        $group: {
            _id: "$domain",
            sum_impressions: {
                $sum: "$impressions"
            },
            sum_bids: {
                $sum: "$bids"

fforbeck

var map_func = function() {
	var imps = this.impressions;
	var clicks = this.clicks;

	emit(this.domain, {'impressions': imps, 'clicks': clicks }); 
	
};


var reduce_func = function(key, values) {