michaelhenrique182

// http://stevenbenner.com/2010/03/javascript-regex-trick-parse-a-query-string-into-an-object/
// JavaScript regex trick: Parse a query string into an object

var queryString = {};
anchor.href.replace(
    new RegExp("([^?=&]+)(=([^&]*))?", "g"),
    function($0, $1, $2, $3) { queryString[$1] = $3; }
);

// Usage

michaelhenrique182

/**
* The object creation time can be set to object’s identifier property. 
* For this purpose, System.currentTimeMillis() can be used. However, 
* two or more objects may be created in a single millisecond. 
* In this case, these objects will have the same id which is unacceptable. 
* One way to cope with this problem is to use System.nanoTime(). 
* Even if the nano time is the smallest interval we can use, it does not 
* also guarantee the uniqueness. To provide unique time stamps, 
* I got help from AtomicReference class as follows.
*/

michaelhenrique182

{
   "retweeted_status": {
      "contributors": null,
      "text": "#Crowdsourcing – drivers already generate traffic data for your smartphone to suggest alternative routes when a road is clogged. #bigdata",
      "geo": null,
      "retweeted": false,
      "in_reply_to_screen_name": null,
      "truncated": false,
      "entities": {
         "urls": [],

michaelhenrique182

Producer

Setup
bin/kafka-topics.sh --zookeeper esv4-hcl197.grid.linkedin.com:2181 --create --topic test-rep-one --partitions 6 --replication-factor 1
bin/kafka-topics.sh --zookeeper esv4-hcl197.grid.linkedin.com:2181 --create --topic test --partitions 6 --replication-factor 3

Single thread, no replication

bin/kafka-run-class.sh org.apache.kafka.clients.tools.ProducerPerformance test7 50000000 100 -1 acks=1 bootstrap.servers=esv4-hcl198.grid.linkedin.com:9092 buffer.memory=67108864 batch.size=8196

michaelhenrique182

MongoDB Cheat Sheet

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