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L1 cache reference                  0.5 ns
Branch mispredict                   5 ns
L2 cache reference                  7 ns
Mutex lock/unlock                   25 ns
Main memory reference               100 ns
Compress 1K bytes with Zippy        3,000 ns
Send 2K bytes over 1 Gbps network   20,000 ns
Read 1 MB sequentially from memory  250,000 ns
Round trip within same datacenter   500,000 ns
Disk seek                           10,000,000 ns

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// Reduction: We can sum all the elements
// with the usual recursive schema
def sum(xs: List[Int]): Int = xs match {
  case Nil     => 0
  case y :: ys => y + sum(ys)  
}

// But this can be abstracted out using 'reduceLeft'
// That will perform these operations LINKING to the left
def sum(xs: List[Int]) = (0 :: xs) reduceLeft ((x, y) = x + y)

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class A
class A2 extends A
class B

trait M[X]

//
// Upper Type Bound
//
def upperTypeBound[AA <: A](x: AA): A = x

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How to set locale in JRSH

1. Set locale for Tool mode
2. Set locale for Interactive mode
3. Set locale for Script mode

Tool Mode

To set locale for Tool mode you need to add --set-locale option and locale name just before your main operation, as in example below:

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POST /rest/login HTTP/1.1
Content-Type: application/x-www-form-urlencoded
User-Agent: Jersey/2.13 (HttpUrlConnection 1.7.0_79)
Host: localhost:8085
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
Content-Length: 41

j_username=superuser&j_password=superuserGET /rest_v2/users HTTP/1.1
Accept: application/json

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Classified links

Entry-level

0. General information about CSRF
1. Synchronizer Token Pattern
2. Double-Submit Cookie Pattern
3. Leveraging the Encrypted Token Pattern
4. Stateful vs Stateless CSRF Defences

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##Reactive System Design Links

#Articles and Papers

• The Reactive Manifesto: http://www.reactivemanifesto.org/
• https://en.wikipedia.org/wiki/Reactive_programming
• https://en.wikipedia.org/wiki/Functional_reactive_programming
• Design Methods for Reactive Systems book slides: http://booksite.elsevier.com/9781558607552/slides/slides.pdf
• Programming without a callstack Event Driven Architectures By G Hohpe: http://www.eaipatterns.com/docs/EDA.pdf
• On Distributed Memory Systems: http://blog.paralleluniverse.co/2012/07/10/on-distributed-memory/
• Disruptor source code, papers and articles: https://lmax-exchange.github.io/disruptor/

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scalac -Xshow-phases

    phase name  id  description
    ----------  --  -----------
        parser   1  parse source into ASTs, perform simple desugaring
         namer   2  resolve names, attach symbols to named trees
packageobjects   3  load package objects
         typer   4  the meat and potatoes: type the trees
        patmat   5  translate match expressions

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def f[A: B, C](a: A)
class B

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// From Spray Framework
implicit def fromStatusObject[T](tuple: (StatusCode, T))(implicit ev: Marshaller[T]) = ???
implicit def fromStatusObject[T: Marshaller](tuple: (StatusCode, T)) = ???