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JavaScript Pause Function

Use this function to create a timed delay. This is for things like stubbing APIs in development.

function delay(timeInMs) {
  await new Promise((resolve) => setTimeout(resolve, timeInMs));
}

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Helpful Git Aliases

Git Gone

Description

This will remove all deleted remote branches and remove local branches that are tracking a deleted remote branch. This is borrowed from here.

Setup

jeromy-vandusen-obs

Using Maven Profiles to Select Spring Boot Deployment Type

By default, Spring Boot applications are built as stand-alone executable JARs with an embedded Tomcat. With some additional configuration, a Spring Boot application can be built as a WAR file to deploy to an existing Tomcat, or other servlet container, instance.

These steps can be used to set up a project that can switch easily between building a stand-alone JAR or a WAR for deployment by specifying a Maven profile when building the deployment package. Notes are provided for cases that use other available servlet containers (Jetty and Undertow).

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Development Tools in Docker Containers Cheat Sheet

Add to .bash_profile or .bashrc:

function git() {
  (docker run -it --rm -v ${HOME}:/root -v "$(pwd)":/git bitnami/git:latest "$@")
}

function mvn() {

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Static Website With Runtime Environment Variables

Main page (index.html)

<script src="./environment.js"></script>

Environment variables (environment.js)

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S3 Static Website Cheat Sheet

1. On the S3 console, click "Create bucket".
2. On the first page, enter a unique bucket name and preferred region.
3. On the second page, accept all default settings.
4. On the third page, uncheck "Block all public access".
5. On the last page, review the settings and click "Create bucket".
6. Click into the newly created bucket, and then click "Upload" to upload your static content.
7. Select the "Properties" tab and then click "Static website hosting".
8. Check "Use this bucket to host a website", enter the file name of the index document, and then click "Save".

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Kafka Development Cheat Sheet

These instructions assume you have Docker and Docker Compose installed.

To run a local development instance of Kafka, first create the following docker-compose.yml file:

version: '2'
services:
 zookeeper:

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Ansible Installation Cheat Sheet

Install Ansible

$ sudo apt-get update
$ sudo apt-get install software-properties-common
$ sudo apt-add-repository ppa:ansible/ansible
$ sudo apt-get update
$ sudo apt-get install ansible

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Docker on a New Virtual Machine - Installation Shortcut

After setting up a new Ubuntu Linux VM and logging in for the first time, copy/paste the following command to update the OS and tools, install Docker CE, install Docker Compose, set the Docker service to automatically start when the OS starts, and add yourself to the Docker group so that you can execute Docker commands. Immediately after submitting this command, you may be prompted for your password. After that, the process will run completely unattended, and will end with a reboot of the VM.

$ sudo apt-get update && sudo apt-get -y upgrade && sudo apt-get -y dist-upgrade && curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add - && sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" && sudo apt-get update && sudo apt-get install -y docker-ce && sudo usermod -aG docker $USER && sudo systemctl enable docker && sudo curl -L https://github.com/docker/compose/releases/down

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Kubernetes Cheat Sheet

Basic Commands

Check the versions on the client and server.

$ kubectl version

View information about the master, including its dashboard location.