robsmith1776

// Convert Javascript date to Pg YYYY MM DD HH MI SS

function pgFormatDate(date) {
  /* Via http://stackoverflow.com/questions/3605214/javascript-add-leading-zeroes-to-date */
  function zeroPad(d) {
    return ("0" + d).slice(-2)
  }

  var parsed = new Date(date)

robsmith1776

Optimizing postgresql table for more than 100K inserts per second

• Create UNLOGGED table. This reduces the amount of data written to persistent storage by up to 2x.
• Set WITH (autovacuum_enabled=false) on the table. This saves CPU time and IO bandwidth on useless vacuuming of the table (since we never DELETE or UPDATE the table).
• Insert rows with COPY FROM STDIN. This is the fastest possible approach to insert rows into table.
• Minimize the number of indexes in the table, since they slow down inserts. Usually an index on time timestamp with time zone is enough.
• Add synchronous_commit = off to postgresql.conf.
• Use table inheritance for fast removal of old data:

robsmith1776

Mac install Nerd Font (Fire code)

brew cask
brew tap homebrew/cask-fonts 
brew install font-fira-code
brew install font-Fira-Code-nerd-font
brew install font-hack-nerd-font

robsmith1776

FROM python:3-alpine

# install requirements for psycopg2
RUN apk update && apk add -u \
    postgresql-dev \
    gcc \
    python3-dev \
    musl-dev

RUN pip3 install psycopg2

robsmith1776

#Systemd - How to read live-tail logs of multiple services with journalctl

sudo journalctl --follow _SYSTEMD_UNIT=docker.service + _SYSTEMD_UNIT=apache2.service