ticean

• Weekly Agenda (created on a different day, and embedded with /Block Reference)
• [[Morning Questions]] [[2/24 -- 3/1/2020]]
  • {{[[slider]]}} How many hours of sleep did I get?
  • [[What's one thing top of mind today?]]
  • [[What's the one thing I need to get done today to make progress?]]
• Agenda
  • {{[[TODO]]}} 2 hours focused time
  • {{[[TODO]]}} Read 30 minutes #goal-learning #habit
• Health & self-care
• {{[[TODO]]}} 30 minutes outside #goal-health #habit

ticean

title Inventory Data Flow

participant Kafka Topic
participant Shippable-Inventory-Plugin
participant Simple-Inventory-Plugin
participant Inventory
participant MongoDB SimpleInventory 
participant MongoDB Products
participant MongoDB Orders

ticean

Kafka Topics

List existing topics

bin/kafka-topics.sh --zookeeper localhost:2181 --list

Describe a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --describe --topic mytopic

Purge a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic mytopic --config retention.ms=1000

... wait a minute ...

ticean

-- show running queries (pre 9.2)
SELECT procpid, age(query_start, clock_timestamp()), usename, current_query 
FROM pg_stat_activity 
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' 
ORDER BY query_start desc;

-- show running queries (9.2)
SELECT pid, age(query_start, clock_timestamp()), usename, query 
FROM pg_stat_activity 
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' 

ticean

Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors

ticean

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

ticean

# A limited way to interact with the Heroku API.
#
# INSTALLATION:
# 1. Create file in scripts folder in hubot folder
# 2. Update package.json for hubot and add dependency on "sprintf": "0.1.1"
# 3. Set heroku config variable HEROKU_USER to heroku user account to use
# 4. Set heroku config variable HEROKU_APIKEY to heroku user account apikey (from My Account page)
#
# heroku status - Retrieve the most recent tweet from the @herokustatus account
# heroku ps --app <appname> - Get process information for application

ticean

Installation

gem install thor
mkdir -p ~/vagrants && cd ~/vagrants
curl -LO https://raw.github.com/gist/1528832/vagrantify
chmod 755 vagrantify

Usage

./vagrantify init webserver

ticean

# Source accepts the protocol region:// with the host as the bucket
# access_key_id and secret_access_key are just that

# for the eu-west-1 region: 
s3_file "/var/bulk/the_file.tar.gz" do
  source "s3-eu-west-1://your.bucket/the_file.tar.gz"
  access_key_id your_key
  secret_access_key your_secret
  owner "root"
  group "root"

ticean

# -*- ruby -*-

# Needs following parameters configured in rake.rb:
# DNS_DOMAIN: domain for which to set entries, including trailing dot
# (e.g. "example.com.")
# DNS_ATTRIBUTE: attribute containing hostname to CNAME to, defaults
# to 'fqdn'; for EC2, use "ec2.public_hostname"
# DNS_ENTRIES: hash mapping hostname to node search query,
# e.g. {'buildbot' => 'recipes:buildbot', 'monitoring' =>
# 'roles:monitoring'}