electrum

Amazon S3 Design Principles

The following principles of distributed system design were used to meet Amazon S3 requirements:

Decentralization: Use fully decentralized techniques to remove scaling bottlenecks and single points of failure.

Asynchrony: The system makes progress under all circumstances.

Autonomy: The system is designed such that individual components can make decisions based on local information.

electrum

Running microbenchmarks.
WARNING: Compiled with assertions enabled, will be slow.
Benchmark            Time(ns)    CPU(ns) Iterations
---------------------------------------------------
BM_UFlat/0              66408      66404       2856 1.4GB/s  html
BM_UFlat/1             715414     715374        270 936.0MB/s  urls
BM_UFlat/2               6901       6901      28368 17.1GB/s  jpg
BM_UFlat/3              23015      23014       8071 3.8GB/s  pdf
BM_UFlat/4             270188     270209        710 1.4GB/s  html4
BM_UFlat/5              25094      25089       7388 935.2MB/s  cp

electrum

import com.sun.management.ThreadMXBean;

import java.lang.management.ManagementFactory;
import java.util.Arrays;

public final class ThreadMemory
{
    public static void main(String[] args)
    {
        ThreadMXBean threadMXBean = (ThreadMXBean) ManagementFactory.getThreadMXBean();

electrum

package org.jdbi.v3.sqlobject;

/**
 * A mixin interface to expose batching methods on the SQL object.
 */
public interface Batchable
{
    /**
     * Begin a SQL batch that will send multiple statements to the database
     * at once. After this is called, a single

electrum

brew install snappy

CPPFLAGS=-I/usr/local/include LDFLAGS=-L/usr/local/lib ant compile-native

chmod 644 build/native/Mac_OS_X-x86_64-64/lib/*

ls -l /usr/local/lib/libsnappy.dylib
ls -l build/native/Mac_OS_X-x86_64-64/lib/libhadoop.dylib

electrum

#Organize Import Order
#Thu Jan 24 12:47:53 PST 2013
3=\#
2=java
1=javax
0=

electrum

Install the following programs and configure them with permissions to access your GitHub profile:

• ghi
• hub

These scripts assume the following two remotes exist:

• origin: your fork
• upstream: the upstream repository

electrum

package io.prestosql.client;

import okhttp3.Interceptor;
import okhttp3.Request;
import okhttp3.Response;

import java.io.IOException;

import static io.airlift.units.Duration.nanosSince;
import static java.lang.String.format;

electrum

Replaced with https://github.com/prestosql/release-scripts

electrum

!/bin/bash
# kill currently running java process

echo "Java processes: $(pgrep java)"
pkill -9 java

for i in $(seq 1 20)
do
   sleep 1
   pgrep java || exit