indradhanush

Keybase proof

I hereby claim:

• I am indradhanush on github.
• I am indradhanush (https://keybase.io/indradhanush) on keybase.
• I have a public key ASCrADGNepl1q3bvGdu8se73WTMMBaxddyPS8Ej7nJ-9EQo

To claim this, I am signing this object:

indradhanush

If you are getting this in gdb on OSX while trying to run a program:

Unable to find Mach task port for process-id 57573: (os/kern) failure (0x5).
 (please check gdb is codesigned - see taskgated(8))

1. Open Keychain Access
2. In menu, open Keychain Access > Certificate Assistant > Create a certificate
3. Give it a name (e.g. gdbc)

indradhanush

Latency Comparison Numbers
--------------------------
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

indradhanush

#!/bin/bash
#
# This script rotates your aws access keys by creating
# a new one and deleting the older one.

# Requirements
# You must have a working aws cli configured already
# Run `aws configure` otherwise first before running this script.

# Installation & Usage

indradhanush

Internet Scale Services Checklist

A checklist for designing and developing internet scale services, inspired by James Hamilton's 2007 paper "On Desgining and Deploying Internet-Scale Services."

• http://mvdirona.com/jrh/talksandpapers/jamesrh_lisa.pdf

Basic tenets

• Does the design expect failures to happen regularly and handle them gracefully?
• Have we kept things as simple as possible?

indradhanush

// Run 1
dhanush@Indradhanushs-MacBook-Pro:~/golang/src/github.com/zeromq/gogozmq$ go test -v -run TestPullSockSingleConnection
=== RUN   TestPullSockSingleConnection
got incoming &{{0xc8200bc000}}
--- PASS: TestPullSockSingleConnection (0.00s)
	sock_test.go:46: new pull
	sock_test.go:54: new push
	sock_test.go:60: push hello
read bytes: 7
PASS

indradhanush

type Conn interface {
	net.Conn
	Connect(endpoint string) error
	CurrentIdx() int
	Serve() error
	handleConnection(conn net.Conn) error
}

type Sock struct {
	conns      []net.Conn

indradhanush

From 8ab91751069e391a95151c6716a546b1732ade92 Mon Sep 17 00:00:00 2001
From: JP <twitter:canoeberry>
Date: Sun, 19 Jan 2014 11:58:54 +0000
Subject: [PATCH] partial memleak fix

This patch was created by JP (twitter: @canoeberry) based on a memleak fix by Dirk (emacs committer) below:
https://github.com/mirrors/emacs/commit/57ae6509a3b6a274f89b9caea0284c6156470625

This memory leak is fixed in the trunk as of now and will be in the next official release: 24.4.

indradhanush

Vagrant::Config.run do |config|
  # ...

  vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
end

indradhanush

class ZMQSynchronizer(Synchronizer):
    """
    Extends leap.soledad.client.sync.SoledadSynchronizer
    """
    syncing_lock = Lock()

    def _sync(self, autocreate=False, defer_decryption=True):
        """
        Overrides SoledadSynchronizer._sync
        """