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Semantic Commit Messages

See how a minor change to your commit message style can make you a better programmer.

Format: <type>(<scope>): <subject>

<scope> is optional

Example

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def scrape_reviews(review_url, pages)
  for i in 1..14 do 
    results = scraper(review_url+"&page="+i.to_s) 
    append_to_file(results)
  end
end

def scraper(url)
  results = []
  browser = Watir::Browser.new :chrome

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import com.twitter.algebird.{
  HLL,
  HyperLogLog,
  HyperLogLogAggregator,
  HyperLogLogMonoid
}

object HLL extends App {
  val hllMonoid = new HyperLogLogMonoid(bits = 4)

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#!/bin/sh
mkdir -p src/{main,test}/{java,resources,scala}
mkdir lib project target

# create an initial build.sbt file
echo 'name := "MyProject"
version := "1.0-SNAPSHOT"
scalaVersion := "2.13.1"' > build.sbt

# create alias in bashrc

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**********Redis***************
Single threaded 
      No need to worry about locks
      Cannot explore multiple cores.Need to run multiple instance in multiple coress.
      Both master and slave in the same machine. Master goes down there is high change for data loss

Data structures
    Rich data structures. Lot of operation on data structures is supported natively.
    Nested data structures is not supported.

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Design Principles
 1. Sacrifice space for time
 2. Single partition per query


Cassandra Data Modelling Process
1. Conceptual Modelling 
   Identify Entities, attributes and their relationships

   Eg: User one -> many Campaigns (relationship)

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Integrate Gem/Engine and main Rails app

Overview

• Paths
• Routes
• Add functionality to controller
• Improving (Extending or overriding) Engine functionality
• Helpers
• Assets

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Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

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Originally:
https://gist.github.com/7565976a89d5da1511ce

Hi Donald (and Martin),

Thanks for pinging me; it's nice to know Typesafe is keeping tabs on this, and I
appreciate the tone. This is a Yegge-long response, but given that you and
Martin are the two people best-situated to do anything about this, I'd rather
err on the side of giving you too much to think about. I realize I'm being very
critical of something in which you've invested a great deal (both financially

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# Bootcamp


The following guide will help you acquire the required skills. Also we suggest you go through the books and videos linked throughout the guide.

### Week 1

We measure our productivity all the time. This is the only way to improve our skills. Measure and push ourself to do slightly better the next time. A huge part of productivity is managing time. The following video and books will give some tips and strategies which you can start implementing right now!

#### Your Brain @ Work