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#!/bin/bash -e | |
# Licensed to the Apache Software Foundation (ASF) under one | |
# or more contributor license agreements. See the NOTICE file | |
# distributed with this work for additional information | |
# regarding copyright ownership. The ASF licenses this file | |
# to you under the Apache License, Version 2.0 (the | |
# "License"); you may not use this file except in compliance | |
# with the License. You may obtain a copy of the License at | |
# | |
# http://www.apache.org/licenses/LICENSE-2.0 |
require 'resque/tasks' | |
namespace :resque do | |
def del(key) | |
Resque.redis.keys(key).each { |k| Resque.redis.del(k) } | |
end | |
desc "Resque setup according to installation guide" | |
task :setup => :environment |
# Makefile for a go project | |
# | |
# Author: Jon Eisen | |
# site: joneisen.me | |
# | |
# Targets: | |
# all: Builds the code | |
# build: Builds the code | |
# fmt: Formats the source files | |
# clean: cleans the code |
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 |
#!/usr/bin/env ruby | |
# pre-commit git hook | |
# will run rspec if and only if current branch is master | |
# script adapted from http://book.git-scm.com/5_git_hooks.html | |
# source : https://gist.github.com/1141992 | |
NO_COMMIT_MESSAGE = "\aDID NOT COMMIT YOUR FILES!" | |
FORMAT = :html |
Currently the RubyGems index is stored as a Gzip file that is a marshalled array. Whenever Bundler needs to install a gem that is not yet installed it downloads the index, gunzips it and unmarshals it. It then looks for dependencies that are described in another file that is also a gzipped and marshalled file. There are several issues that arise from this setup:
Additionally the gems themselves are currently centralized since there is nothing in the meta data that indicates where the gem should be downloaded from. However in order to allow this it is important to find ways of keeping the index from being poisoned (is this an issue in the centralized system?)
:+1: | |
:-1: | |
:airplane: | |
:art: | |
:bear: | |
:beer: | |
:bike: | |
:bomb: | |
:book: | |
:bulb: |