cpursley

PostgreSQL is Enough

• Simplify: move code into database functions
• Just Use Postgres for Everything
• PostgreSQL is the worlds’ best database
• Postgres is eating the database world
• Hacker News discussion

Background and Cron Jobs

tresni

Moving Authy to 1Password

1Password 5.3 for OSX, 5.2 for iOS, and 4.1.0.538 for Windows support OTP. I've been using Authy for a while now, but the fact is, I haven't really been using 2FA for some time. As mentioned by 1Password in a recent blog post, having the OTP generator and password on the same device is very much not 2FA. It's just an expiring OTP, which can help, but let's not kid ourselves too much.

With that out of the way. One of the things that was interesting to me was moving my OTP out of Authy and into 1Password. I like the control I get with 1Password, but I didn't want to have to reset all my OTP right away, that would suck. So, I got to dissecting the Authy Chrome App to see what I could do.

Run the Authy Chrome app and make sure it's unlocked.

Now, enable Developer mode in Chrome. We'll need this to inspect the background application that stores al

codeinthehole

#!/usr/bin/env bash
#
# Get the value of a tag for a running EC2 instance.
#
# This can be useful within bootstrapping scripts ("user-data").
#
# Note the EC3 instance needs to have an IAM role that lets it read tags. The policy
# JSON for this looks like:
#
#    {

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs