dalegaspi

sudo find . -type f -name "write.lock" -exec rm -f {} \;

dalegaspi

# use withe sudo when applicable
# install cmake via MacPorts
port install cmake

# install as per INSTALL 
git clone https://github.com/Softmotions/ejdb.git
cd ejdb
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release ../

dalegaspi

the .java file is for initializing using embedded Jetty...the web.xml is for deploying the Jersey service as a WAR file.

dalegaspi

Introduction

There is very little information on the internet on how to send broadcast UDP messages in Java, which is kind of surprising since UDP broadcast is the simplest way to do broadcast messages without having to write a lot of code and or put in a lot of moving pieces, so long as one is aware of the drawbacks. I found myself having to search for this information and even Oracle's own documentation on this is just mediocre at best. Fortunately, someone took the time to write down. This is just a mirror of that information on GitHub to make it easier to find for someone searching for the same information.

The Sender

1. Import some needed classes

import sun.net.*;
import java.net.*;

2. Declare the port we send to

dalegaspi

java -cp chronicle-logger-tools-1.1.1.jar:chronicle-logger-1.1.1.jar:chronicle-3.5.3.jar:lang-6.6.7.jar net.openhft.chronicle.logger.tools.ChroniTail -t -u /opt/tomcat/logs/chronicle/main

dalegaspi

• Use Java 8. Seriously, any other version is just backwards-thinking. Functional aspects of the new version is reason enough to use it.
• Use Jersey REST Framework. I've tried every other framework out there (including the bloated, over-engineered Play Framework) and nothing comes close to its efficiency and features without being bloated.
• Never use parallelStream()...at least in the current release of Java 8 as it has the most inane implementation of parallelism I have come across to date.
• On that note, never spawn threads at all within a request. If your request is taking too long using a single thread, you're doing it wrong.
• Use a profiler. Buy a YourKit license now.
• Be mindful of your logging. For example, if you're using Log4J2 asynchronous loggers, don't use includeLocation=true.
• If you need a simple in-memory, non-distributed caching, use Google Guava Caching libraries. For Pete's sake, don't roll your own using ConcurrentHashMap; life is too short for that.
• Need pooling objects

dalegaspi

ResourceConfig rc = new ResourceConfig().packages(...)
  .register(...);
  
// this is to enable JMX...or any init parameters for that matter
rc.addProperties(ImmutableMap.of("jersey.config.server.monitoring.statistics.mbeans.enabled", "true"));

dalegaspi

tail -f reporting.log | grep --line-buffered "INFO S3RecordFetcher - 20160119/" | cut -c23-64 | stdbuf -oL uniq | ts

dalegaspi

// for use with your build.sbt

object Dependencies {
  // ... all your other dependencies
  
  val typesafeSlick = "com.typesafe.slick" %% "slick" % "3.1.1"
  val postgreSql = "org.postgresql" % "postgresql" % "9.4.1209"
  val hikariCP = "com.typesafe.slick" %% "slick-hikaricp" % "3.1.0" // you need really need this or you get ClassNotFoundException
}

dalegaspi

package com.tormund

import java.util
import java.util.concurrent.TimeUnit

import com.codahale.metrics._
import com.typesafe.scalalogging.StrictLogging
import org.json4s.DefaultFormats

/**