tyzbit

function usage() {
  echo "Usage: $0 [region] [cluster name] [role arn]"
  echo "If you're not using a role, [region] and [role arn] are optional"
  echo "If you just use cluster name, you need aws-iam-authenticator installed"
}

if [ -z $1 ]; then
  usage
  exit 1
fi

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

doches

-- Lua Cheat Sheet for Programmers, by Al Sweigart http://coffeeghost.net
-- This cheat sheet is an executable Lua program.
--[[ This is
a multline comment]]

---[[ This is a neat trick. The first -- makes -[[ not a multiline comment.
print("This line executes.")
--]] The rest of this line is also a comment.

print("Here is a string" .. ' concatenated with ' .. 2 .. ' other strings.')