Yogesh Agrawal saggiyogesh

In computing, memoization or memoisation
is an optimization technique used primarily
to speed up computer programs by storing
the results of expensive function calls and
returning the cached result when the same
inputs occur again.
— wikipedia

Node cordon / drain https://github.com/rancher/docs/issues/669#issuecomment-422127643

Node cleanup https://gist.github.com/superseb/2cf186726807a012af59a027cb41270d

https://rancher.com/docs/rancher/v2.x/en/cluster-admin/cleaning-cluster-nodes/

Add an app to code-push code-push app add myiosapp ios react-native

Copy the Production deployment key. Use this key when asked in terminal after doing react-native link code-push
Release a build for ios. code-push release-react myiosapp ios
Promote the build to production. code-push promote myiosapp Staging Production

	#!/bin/bash
	echo "Building NGINX along with Echo module"

	# install prerequisites
	yum -y install gcc gcc-c++ make zlib-devel pcre-devel openssl-devel

	# download the Echo module
	curl -L -O 'https://github.com/openresty/echo-nginx-module/archive/v0.58.tar.gz'
	tar -xzvf v0.58.tar.gz && rm v0.58.tar.gz
	mv echo-nginx-module-0.58 /tmp/echo-nginx-module

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	Import Cost

	#!/bin/sh
	docker rm -f $(docker ps -qa)
	docker volume rm $(docker volume ls -q)
	cleanupdirs="/var/lib/etcd /etc/kubernetes /etc/cni /opt/cni /var/lib/cni /var/run/calico /opt/rke"
	for dir in $cleanupdirs; do
	echo "Removing $dir"
	rm -rf $dir
	done

	#!/usr/bin/env bash

	set -e

	# find existing version of static.zip
	cd ios;

	name=$(ls \| grep static)
	echo 'grep name: '$name

-function getNullKeysRecursively(doc, keyName, nullKeys) {
-  for (var item_property in doc) {
-    // SKIP BASE-CLASS STUFF
-    if (!doc.hasOwnProperty(item_property)) continue;
-    // SKIP ID FIELD
-    if (item_property === '_id') continue;
-    // FULL KEY NAME (FOR SUB-DOCUMENTS)
-    var fullKeyName;
-    if (keyName) fullKeyName = keyName + '.' + item_property;

	// This script is executed in mongo shell to replace all occurence of a STRING, with an objectId string
	// and then using parse, converting objectId string to actual objectId

	db.Dummy.find({}).forEach(function(doc) {
	console.log(doc._id);
	let newDoc = JSON.stringify(doc).replace('STRING', '5ab23ff3423159ad5d0251c0');
	print('newDoc', newDoc);

	let jsonDoc = JSON.parse(newDoc, (key, value) => {
	if (value === '5ab23ff3423159ad5d0251c0') {