endolith

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jwage

<?php

/*
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

ryandotsmith

Event Buffering

Eventually platforms outgrow the single-source-tree model and become distributed systems. A common pattern in these distributed systems is distributed composition via event buffering. Here we motivate and describe this event buffering pattern.

The Problem

henrik

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

dhh

bcx david$ rake stats
+----------------------+-------+-------+---------+---------+-----+-------+
| Name                 | Lines |   LOC | Classes | Methods | M/C | LOC/M |
+----------------------+-------+-------+---------+---------+-----+-------+
| Controllers          |  3704 |  2942 |      72 |     479 |   6 |     4 |
| Helpers              |  1901 |  1529 |      13 |     261 |  20 |     3 |
| Models               |  5310 |  4116 |      50 |     653 |  13 |     4 |
| Libraries            |  2167 |  1593 |      51 |     200 |   3 |     5 |
| Integration tests    |   297 |   217 |       6 |       1 |   0 |   215 |
| Functional tests     |  3897 |  3065 |      61 |      11 |   0 |   276 |

frsyuki

My thoughts on MessagePack

Hi. My name is Sadayuki "Sada" Furuhashi. I am the author of the MessagePack serialization format as well as its implementation in C/C++/Ruby.

Recently, MessagePack made it to the front page of Hacker News with this blog entry by Olaf, the creator of the Facebook game ZeroPilot. In the comment thread, there were several criticisms for the blog post as well as MessagePack itself, and I thought this was a good opportunity for me to address the questions and share my thoughts.

My high-level response to the comments

To the best of my understanding, roughly speaking, the criticisms fell into the following two categories.

rmurphey

// a function that does too many things
function showPrice(row, standardPrice, discountPrice, savings, isProrated, isDeferred) {

  var priceCol = row.find('td.price').eq(0);
  var discountCol = row.find('td.price').eq(1);
  var txt = '';

  if (!discountPrice && !standardPrice && !savings && !isProrated && !isDeferred) {
    discountCol.html('<img src="/img/loading.gif" />');
  } else {

monkyz

source article:
http://backdrift.org/transparent-proxy-with-ssh

Creating a transparent SSH tunnel through a bastion host using the ProxyCommand configuration parameter
Tags: linux, ssh, unix

Like most users out there (I think) my systems are usually configured to allow ssh connections from a small handfull of trusted hosts or a bastion host. This is decent security practice but is a total pain when you want to scp a file or grab the stdout of a command from a host outside the trusted area. Or perhaps you have a number of hosts on a private subnet and only one routable host to get in through. I was able to set up a method which allows for transparent access to a host while behind the scenes tunneling through a trusted bastion host involving some pretty minor adjustments to the .ssh/config file.

Here’s how it works:

mrflip

Next Steps

• Measure time spend on index, flush, refresh, merge, query, etc. (TD - done)
• Take hot threads snapshots under read+write, read-only, write-only (TD - done)
• Adjust refresh time to 10s (from 1s) and see how load changes (TD)
• Measure time of a rolling restart doing disable_flush and disable_recovery (TD)
• Specify routing on query -- make it choose same node for each shard each time (MD)
• GC new generation size (TD)
• Warmers

• measure before/after of client query time with and without warmers (MD)

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000