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Ervin Barta ervinb

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@jjb
jjb / gist:7389552
Last active December 22, 2024 15:58
Ruby 2.1 memory configuration

This all applies to Ruby 2.1. In some cases a setting is not available in 2.0, this is noted. There is also a different with 1.9, 1.8, and REE --- these are not noted.

All the relevant code is in https://github.com/ruby/ruby/blob/master/gc.c

RUBY_HEAP_MIN_SLOTS

default: 10000

The number of heap slots to start out with. This should be set high enough so that your app has enough or almost enough memory after loading so that it doesn't have to allocate more memory on the first request (althogh this probably isn't such a big deal for most apps).

(todo: figure out how big a slot is. i think the answer can be infered from this code.)

@wsargent
wsargent / docker_cheat.md
Last active June 29, 2024 19:32
Docker cheat sheet
@messified
messified / php-interview.md
Last active July 1, 2024 05:15
PHP Engineer Interview: What you should know

PHP Developer Interview: What you should know

1. What’s the difference between " self " and " this " ?

Use $this to refer to the current object. Use self to refer to the current class. In other words, use $this->member for non-static members, use self::$member for static members.

Source: When to use self vs this -stackoverflow

@dypsilon
dypsilon / backendDevelopmentBookmarks.md
Last active June 24, 2025 13:42
Backend Engineering Bookmarks
@dypsilon
dypsilon / frontendDevlopmentBookmarks.md
Last active July 2, 2025 22:26
A badass list of frontend development resources I collected over time.
@KartikTalwar
KartikTalwar / Documentation.md
Last active June 11, 2025 03:14
Rsync over SSH - (40MB/s over 1GB NICs)

The fastest remote directory rsync over ssh archival I can muster (40MB/s over 1gb NICs)

This creates an archive that does the following:

rsync (Everyone seems to like -z, but it is much slower for me)

  • a: archive mode - rescursive, preserves owner, preserves permissions, preserves modification times, preserves group, copies symlinks as symlinks, preserves device files.
  • H: preserves hard-links
  • A: preserves ACLs
@ndarville
ndarville / business-models.md
Last active June 13, 2025 01:26
Business models based on the compiled list at http://news.ycombinator.com/item?id=4924647. I find the link very hard to browse, so I made a simple version in Markdown instead.

Business Models

Advertising

Models Examples
Display ads Yahoo!
Search ads Google
@NapoleonWils0n
NapoleonWils0n / oathtool totp google 2 factor example.txt
Created November 3, 2012 01:41
macosx: oathtool totp google 2 factor authentication
#-----------------------------------------------#
# oathtool totp google 2 factor
#-----------------------------------------------#
# if you have already set up 2 factor authentication with your phone
# you need to remove it from your phone and google authenticator app
# this wont invalidate your backup codes or application codes
# login to your google account go to 2 factor authentication,
@victorbstan
victorbstan / clips.html
Created August 25, 2012 20:34
Angular JS and Rails 3 Infinite Scroll Pagination
<!--
This is the HTML portion of the infinite scroll/pagination with Rails and AngularJS tutorial
Required libraries for the tutorial and indicated as "Important",
together with implementation specific libraries marked as "Optional"
-->
<!DOCTYPE html>
<html>
<title>Clips</title>
<!-- Important -->
@zhengjia
zhengjia / capybara cheat sheet
Created June 7, 2010 01:35
capybara cheat sheet
=Navigating=
visit('/projects')
visit(post_comments_path(post))
=Clicking links and buttons=
click_link('id-of-link')
click_link('Link Text')
click_button('Save')
click('Link Text') # Click either a link or a button
click('Button Value')