Skip to content

Instantly share code, notes, and snippets.

View dungvn3000's full-sized avatar

Nguyen Duc Dung dungvn3000

45 followers · 138 following
View GitHub Profile
@julianlam
julianlam / expose-directory-on-host-to-lxc-container.md
Last active March 22, 2025 08:11
Exposing a directory on the host machine to an LXC container #blog

Exposing a directory on the host machine to an LXC container

  1. Log into the container and create an empty directory, this will be the mount point
  2. Log out and stop the container.
  3. Open to your container's config file
    • For regular LXC containers: /var/lib/lxc/mycontainer/config
    • For unprivileged LXC containers: $HOME/.local/share/lxc/mycontainer/config
  4. Add a new line above the lxc.mount directive, that follows the format below. Substitute proper paths as necessary:
    • lxc.mount.entry = /path/to/folder/on/host /path/to/mount/point none bind 0 0
  • Both of these paths are relative to the host machine.
@jrudolph
jrudolph / TestMultipartFileUpload.scala
Last active February 13, 2023 18:09
akka-http Multipart file-upload client + server example
package akka.http.scaladsl
import java.io.File
import akka.http.scaladsl.unmarshalling.Unmarshal
import akka.util.ByteString
import scala.concurrent.duration._
import akka.actor.ActorSystem
@magnetikonline
magnetikonline / README.md
Last active June 27, 2023 17:26
Nginx keepalive connections config example to upstream servers.

Nginx upstream HTTP keepalive config example

As per Nginx documentation, the key directives of proxy_http_version and proxy_set_header need to be set as per below:

upstream backend {
	server 127.0.0.1:8080;
	keepalive 8;
}

server {
@gzoller
gzoller / FlexiFlowExample.scala
Last active November 5, 2018 13:40
Akka Stream FlexiFlow switch example
object PrimaryFlow extends App {
implicit val system = ActorSystem()
implicit val materializer = ActorMaterializer()
val sj = ScalaJack()
val graph = FlowGraph.closed() { implicit builder: FlowGraph.Builder[Unit] =>
import FlowGraph.Implicits._
val in = Source(List.empty[String]) // hook this up to RabbitMQ
val out = Sink.foreach( (mc:Command) => println("Command:" +mc) )
@nkt
nkt / Results.md
Last active December 22, 2024 11:44
ReactPHP vs Node.js

wrk -t4 -c400 -d10s http://127.0.0.1:1337/

PHP

Running 10s test @ http://127.0.0.1:1337/
  4 threads and 400 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
 Latency 7.02ms 6.94ms 82.86ms 85.27%
@xigang
xigang / golang-patterns
Last active January 7, 2025 09:35
import "regexp"
// Basic regular expressions for validating strings
const (
Email string = "^(((([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+(\\.([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+)*)|((\\x22)((((\\x20|\\x09)*(\\x0d\\x0a))?(\\x20|\\x09)+)?(([\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f]|\\x21|[\\x23-\\x5b]|[\\x5d-\\x7e]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(\\([\\x01-\\x09\\x0b\\x0c\\x0d-\\x7f]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}]))))*(((\\x20|\\x09)*(\\x0d\\x0a))?(\\x20|\\x09)+)?(\\x22)))@((([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])([a-zA-Z]|\\d|-|\\.|_|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.)+(([a-zA-Z]|[\\
@CMCDragonkai
CMCDragonkai / regular_expression_engine_comparison.md
Last active July 6, 2025 20:20
Regular Expression Engine Comparison Chart

Regular Expression Engine Comparison Chart

Many different applications claim to support regular expressions. But what does that even mean?

Well there are lots of different regular expression engines, and they all have different feature sets and different time-space efficiencies.

The information here is just copied from: http://regular-expressions.mobi/refflavors.html

@kellymclaughlin
kellymclaughlin / haskell-smartos.md
Last active January 26, 2019 17:33
GHC build steps for Haskell on SmartOS

I borrowed these steps from the buildbot setup for SmartOS I found at http://haskell.inf.elte.hu/builders/. Generally the standard build steps for ghc seems to work pretty well at this point aside from a few more test failures than I observed when building on Linux.

  1. Clone ghc repo and check out desired branch or tag.
  2. Edit mk/build.mk to be the following:
@nrollr
nrollr / MySQL_macOS_Sierra.md
Last active March 7, 2025 05:00
Install MySQL on Sierra using Homebrew

Install MySQL on macOS Sierra

This procedure explains how to install MySQL using Homebrew on macOS Sierra 10.12

Install Homebrew

  • Installing Homebrew is effortless, open Terminal and enter :
    $ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
  • Note: Homebrew will download and install Command Line Tools for Xcode 8.0 as part of the installation process.

Install MySQL

At this time of writing, Homebrew has MySQL version 5.7.15 as default formulae in its main repository :

@alexandru
alexandru / scheduleAtFixedRate.scala
Last active November 22, 2017 07:07
import scala.concurrent.duration._
def scheduleTaskAtFixedRate[A](initialDelay: FiniteDuration, period: FiniteDuration, task: Task[A]): Task[Unit] =
Task.create { (s, callback) =>
def loop(delay: Long): Task[Unit] =
Task.defer {
val startedAt = s.currentTimeMillis()
val t = task.flatMap { _ =>
val duration = s.currentTimeMillis() - startedAt
val nextDelay = {