ochrons

object CassandraWrapper {
  import scala.language.implicitConversions
  import scala.language.postfixOps
  /**
   * Converts a `ResultSetFuture` into a Scala `Future[ResultSet]`
   * @param f ResultSetFuture to convert
   * @return Converted Future
   */
  implicit def resultSetFutureToScala(f: ResultSetFuture): Future[ResultSet] = {
    val p = Promise[ResultSet]()

yujikiriki

package core.dao

import scala.concurrent.Future

import play.api.Logger

import reactivemongo.core.commands.LastError
import reactivemongo.core.errors.DatabaseException

import core.db.MongoHelper

jrudolph

case class ErrorMessage(message: String, cause: String)
object ErrorMessage {
  import spray.json.DefaultJsonProtocol._
  implicit val errorFormat = jsonFormat2(ErrorMessage.apply)
}
import spray.httpx.SprayJsonSupport._
implicit val jsonRejectionHandler = RejectionHandler {
  case MalformedRequestContentRejection(msg, cause) :: Nil =>
    complete(StatusCodes.BadRequest, ErrorMessage("The request content was malformed", msg))

tpolecat

Hi, looking for scalac flags?

This gist has been upgraded to a blog post here.

jboner

# How Akka maps to EAI Patterns

Might be up for debate or just plain wrong. Just some notes I scribbled down some time ago. 

-----------------------------------------------------------------------------------------------------------------
EAI PATTERN                     AKKA PATTERN                  REFERENCE
-----------------------------------------------------------------------------------------------------------------
Point to Point Channel          Regular Actor Communication   http://www.eaipatterns.com/PointToPointChannel.html
Event-Driven Consumer           Regular Actor Receive         http://www.eaipatterns.com/EventDrivenConsumer.html
Message Selector                Actor with Stash              http://www.eaipatterns.com/MessageSelector.html

seboudry

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns                     on recent CPU
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 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs 4X memory

guenter

import mesosphere.mesos.util.FrameworkInfo
import org.apache.mesos.MesosSchedulerDriver


/**
 * @author Tobi Knaup
 */

object Main extends App {

wsargent

303 See Other

Location: https://github.com/wsargent/docker-cheat-sheet

Hi there!

The docker cheat sheet has moved to a Github project under https://github.com/wsargent/docker-cheat-sheet.

Please click on the link above to go to the cheat sheet.

miguel-vila

Advanced Scala:

Monad intros:

1. A nice intro: Scala Monads: Declutter Your Code With Monadic Design [YouTube]

Some monads:

1. Scalaz State Monad
2. Reader Monad for dependency injection

ismell

Production Ready Process Monitoring

1. Install docker-manger.conf and docker-instance.conf in /etc/init

2. Create a containers file in /etc/docker/ with the following format

    name: image cmd
   

   The name must be unique.

3. sudo service docker-manager start