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@miry
miry / Gemfile
Last active January 27, 2024 07:37
Sidekiq gracefull startup and shutdown in Kubernetes
# frozen_string_literal: true
source "https://rubygems.org"
git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
gem "sidekiq"
@hopsoft
hopsoft / Dockerfile
Last active May 17, 2023 19:58
Dockerize your Rails app
FROM ruby:3.0-alpine
RUN apk add --no-cache --update \
ack \
bash \
build-base \
curl \
git \
htop \
less \
@schmich
schmich / ducky.md
Last active May 23, 2024 09:46
Programming media keys on the Ducky One 2 Skyline

Programming Media Keys on the Ducky One 2 Skyline

To use media keys on the Ducky One 2 Skyline, you must record a macro to bind the media function to a hotkey combination, i.e. Fn plus some key.

Example

Important: In the instructions below, "Press X+Y+Z" means press and hold key X, press and hold key Y, press and hold key Z in that order, and then release all three.

As an example, to bind Fn+PgUp to the play/pause media function:

@schweigert
schweigert / Embedding GoLang into a Ruby application.md
Last active May 3, 2024 19:23
Embedding GoLang into a Ruby application - Blogpost to Magrathealabs

Go Title

I am passionate about Ruby, but its execution time compared to other languages is extremely high, especially when we want to use more complex algorithms. In general, data structures in interpreted languages become incredibly slow compared to compiled languages. Some algorithms such as ´n-body´ and ´fannkuch-redux´ can be up to 30 times slower in Ruby than Go. This is one of the reasons I was interested in embedding Go code in a Ruby environment.

For those who do not know how shared libraries operate, they work in a similar way as DLLs in Windows. However, they have a native code with a direct interface to the C compiler.

Note Windows uses the DLL system, and in this case, this does not necessarily have to be in native code.

One example is DLLs written in C#, which runs on a virtual machine. Because I do not use windows, I ended up not testing if it is poss

@alexey-milovidov
alexey-milovidov / nested.txt
Created June 17, 2016 21:15
Example of Nested data type in ClickHouse.
:) CREATE TABLE test.nested (EventDate Date, UserID UInt64, Attrs Nested(Key String, Value String)) ENGINE = MergeTree(EventDate, UserID, 8192)
CREATE TABLE test.nested
(
EventDate Date,
UserID UInt64,
Attrs Nested(
Key String,
Value String)
) ENGINE = MergeTree(EventDate, UserID, 8192)
@valyala
valyala / README.md
Last active May 29, 2024 21:19
Optimizing postgresql table for more than 100K inserts per second

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:
@jj1bdx
jj1bdx / avr-devenv-install-macos.md
Last active January 25, 2023 10:47
Installing 8bit AVR development kit from macOS HomeBrew and FreeBSD Ports with the optiboot environment

AVR 8bit HomeBrew installation for macOS

In case you have a trouble for updating the tap, perform uninstalling of the related tools and osx-cross/avr tap:

brew remove avr-binutils avr-gcc
brew untap osx-cross/avr

For installing the tap, do the following:

@bruienne
bruienne / xhyverun.sh
Last active October 4, 2018 09:40
xhyve boot2docker sample config
#!/bin/sh
KERNEL="/path/to/vmlinuz64"
INITRD="/path/to/initrd.img"
#CMDLINE="earlyprintk=serial console=ttyS0 acpi=off"
CMDLINE="loglevel=3 user=docker console=ttyS0 console=tty0 noembed nomodeset norestore waitusb=10:LABEL=boot2docker-data base"
MEM="-m 1G"
#SMP="-c 2"
NET="-s 2:0,virtio-net,en0"
@neilcarpenter
neilcarpenter / gist:8979ea9ed91b10e36af9
Created March 5, 2015 11:03
Enable Emmet in .JSX files, using Babel JSX Syntax highlighter
// add to Preferences > Key Bindings - User
// see http://stackoverflow.com/a/26619524 for context
{ "keys": ["tab"], "command": "expand_abbreviation_by_tab",
"context": [
{
"operand": "source.js",
"operator": "equal",
"match_all": true,
"key": "selector"
@jannson
jannson / convert_audio.go
Last active November 9, 2023 02:12
ffmpeg convert audio
func populateStdin(file []byte) func(io.WriteCloser) {
return func(stdin io.WriteCloser) {
defer stdin.Close()
io.Copy(stdin, bytes.NewReader(file))
fmt.Println("copied ok")
}
}
func audio_m4a2mp3(data []byte) ([]byte, error) {
binary, lookErr := exec.LookPath("ffmpeg")