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John Bachir jjb

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jjb / How to deal with ruby and postgres segmentation fault on MacOS when using macports or homebrew.md
Last active October 23, 2024 21:42

Here's something I spent a long time debugging, so I'm making this gist to help others find the solution when searching.

Summary

postgres 12 on MacOS will cause crashes when forking. The solution is to do one of these two things:

  • add gssencmode: "disable" to database.yml
  • if using homebrew: uninstall postgres, update homebrew, reinstall postgres

Here's some discussion:

@jjb
jjb / gist:d65bc10bb55fed7e4cafb07be035c10a
Created April 21, 2020 03:33
test results for https://github.com/puma/puma/pull/2228
run 1 - nothing
273.3 MB
27.4 MB
27.3 MB
27.3 MB
27.3 MB
27.3 MB
@jjb
jjb / check the syntax in a tree of files.rb
Created January 23, 2020 22:35
lines = `find . -name '*.rb'`.split("\n")
problems = []
lines.each_slice(100) do |slice|
threads = []
slice.each do |l|
threads << Thread.new do
result = `ruby -c #{l}`
if "Syntax OK" == result.strip
print "."
@jjb
jjb / how to instrument graphql ruby with scout.rb
Created May 21, 2019 14:22
class GraphqlController < ApplicationController
def create
ScoutApm::Transaction.rename("Graphql/" + params["_json"].first["operationName"])
@jjb
jjb / delete all branches on a github page.js
Created May 20, 2019 16:04
# https://github.com/my-company/my-project/branches/stale?page=7
buttons = document.getElementsByClassName("js-branch-delete-target text-red");
for(var i = 0; i < buttons.length; i++)
buttons[i].click();
@jjb
jjb / concat.rb
Last active March 8, 2019 19:10
Ruby String Interpolation vs. Concatenation performance benchmark
t = Time.now
a = []
10_000_000.times do
a << "a" + " " + "b"
end
puts Time.now.to_f - t.to_f
@jjb
jjb / rails 5.0 vs 5.1 default primary key in postgres.md
Created February 14, 2019 16:51

5.0, no id specified

class SerialIdTest < ActiveRecord::Migration[5.0]
  def change
    create_table "test" do |t|
      t.integer "foo_id"
      t.string "foo_role"
    end
  end
@jjb
jjb / how to make a handy dandy alert thingy.md
Last active February 1, 2019 15:53

alert shell function

I keep mine in .zshrc. It could probably also be a standalone script named "alert" with chmod 755 (i think?) in ~/bin

# examples:
#   git push heroku master ; alert
#   bundle install ; alert
function alert {
  if (( $? == 0 )) then
@jjb
jjb / 🗳 How to get the vote out for Democrats 🗳.md
Last active November 15, 2018 04:47
@jjb
jjb / file.md
Created February 4, 2018 16:27
Active Record Connection Management in Rails 5.1 or lower