ecthiender

Install doom emacs

git clone --depth 1 https://github.com/hlissner/doom-emacs ~/.emacs.d
cd ~/.emacs.d
bin/doom install

Optional

onlurking

Programming as Theory Building

Peter Naur

Peter Naur's classic 1985 essay "Programming as Theory Building" argues that a program is not its source code. A program is a shared mental construct (he uses the word theory) that lives in the minds of the people who work on it. If you lose the people, you lose the program. The code is merely a written representation of the program, and it's lossy, so you can't reconstruct

gene1wood

If you

• Create a CloudFormation template that creates an Auto Scale Group
• Set the TargetGroupARNs field in the Auto Scale Group to the output from the Target Group's LoadBalancerArns attribute (which is obtained with GetAtt)
• Do a stack update

You will encounter a stack update failure with the error message Provided Target Groups may not be valid

Instead of using GetAtt of the LoadBalancerArns of the Target Group, use the Ref of the Target Group and put the single resulting ARN into

jboner

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