merikan

Some Jenkinsfile examples

onjin

postgres:
  image: postgres:9.4
  volumes:
    - ./init.sql:/docker-entrypoint-initdb.d/init.sql

rmtsrc

PostgreSQL JSON Cheatsheet

Using JSON in Postgres by example.

Quick setup via Docker

1. Download and install: Docker Toolbox
2. Open Docker Quickstart Terminal
3. Start a new postgres container:
   docker run --name my-postgres -e POSTGRES_PASSWORD=mysecretpassword -d postgres

niksumeiko

Disable HTML Form Input Autocomplete and Autofill

1. Add autocomplete="off" onto <form> element;
2. Add hidden <input> with autocomplete="false" as a first children element of the form.

<form autocomplete="off" method="post" action="">
    <input autocomplete="false" name="hidden" type="text" style="display:none;">
    ...

kevincharm

#!/bin/bash
# Automates letsencrypt SSL cert generation/installation on CentOS 7 w/nginx
# MIT, use at your own risk blabla

EMAIL=foo@bar.com
DOMAIN_NAME=foo.bar.com

sudo su - root
cd ~
git clone https://github.com/letsencrypt/letsencrypt

inindev

/* 
 * derivative work of Matheus de Oliveira's json_manipulator.sql
 *   https://gist.github.com/matheusoliveira/9488951 
 *
 *  adapted to support postgresql 9.4 jsonb type
 *  no warranties or guarantees of any kind are implied or offered
 *
 *  license is as Matheus conferred it on 4/9/2015:
 *  matheusoliveira commented on Apr 9
 *    @hannes-landeholm, I'd like to take credit if you share them 

xrstf

Info

This guide sets up a non-clustered Nutch crawler, which stores its data via HBase. We will not learn how to setup Hadoop et al., but just the bare minimum to crawl and index websites on a single machine.

Terms

• Nutch - the crawler (fetches and parses websites)
• HBase - filesystem storage for Nutch (Hadoop component, basically)

rjurney

# Install Java 1.8 in CentOS/RHEL 6.X
sudo yum remove -y java-1.6.0-openjdk
wget --no-cookies \
--no-check-certificate \
--header "Cookie: oraclelicense=accept-securebackup-cookie" \
"http://download.oracle.com/otn-pub/java/jdk/8-b132/jdk-8-linux-x64.rpm" \
-O jdk-8-linux-x64.rpm
sudo rpm -Uvh jdk-8-linux-x64.rpm
sudo alternatives --install /usr/bin/java java /usr/java/jdk1.8.0/jre/bin/java 20000
sudo alternatives --install /usr/bin/jar jar /usr/java/jdk1.8.0/bin/jar 20000

matheusoliveira

CREATE OR REPLACE FUNCTION public.json_append(data json, insert_data json)
RETURNS json
IMMUTABLE
LANGUAGE sql
AS $$
    SELECT ('{'||string_agg(to_json(key)||':'||value, ',')||'}')::json
    FROM (
        SELECT * FROM json_each(data)
        UNION ALL
        SELECT * FROM json_each(insert_data)

denji

Moved to git repository: https://github.com/denji/nginx-tuning

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.