dsyer

Dynamic Configuration Properties in Spring Boot and Spring Cloud

TL;DR

• Use @ConfigurationProperties and always get state from the bean.
• The Environment can change at runtime and Spring Cloud does this for you using RefreshEvent.
• Changes are propagated to beans in Spring Cloud in 2 ways (@ConfigurationProperties and @RefreshScope).
• If you care about the state of @ConfigurationProperties being consistent on concurrent access, put it or the consumer @Bean in @RefreshScope.

Typical Scenarios

tombigel

How to Change Open Files Limit on OS X and macOS

This text is the section about OS X Yosemite (which also works for macOS Sierra) from https://docs.basho.com/riak/kv/2.1.4/using/performance/open-files-limit/#mac-os-x

The last time i visited this link it was dead (403), so I cloned it here from the latest snapshot in Archive.org's Wayback Machine https://web.archive.org/web/20170523131633/https://docs.basho.com/riak/kv/2.1.4/using/performance/open-files-limit/

Mac OS X

To check the current limits on your Mac OS X system, run:

gboudreau

Exporting your 2FA tokens from Authy to transfer them into another 2FA application

IMPORTANT - Update regarding deprecation of Authy desktop apps

Past August 2024, Authy stopped supported the desktop version of their apps:
See Authy is shutting down its desktop app | The 2FA app Authy will only be available on Android and iOS starting in August for details.

And indeed, after a while, Authy changed something in their backend which now prevents the old desktop app from logging in. If you are already logged in, then you are in luck, and you can follow the instructions below to export your tokens.

If you are not logged in anymore, but can find a backup of the necessary files, then restore those files, and re-install Authy 2.2.3 following the instructions below, and it should work as expected.

armand1m

FROM alpine

RUN apk add --update --no-cache nodejs
RUN npm i -g yarn

ADD package.json yarn.lock /tmp/
ADD .yarn-cache.tgz /

RUN cd /tmp && yarn
RUN mkdir -p /service && cd /service && ln -s /tmp/node_modules

bjoern-r

HOWTO use a Huawei E3372 on OpenWRT

This modem is also sold as a MegaFon M150-2 USB dongle

Needed Software

Install the needed packages via opkg tool

opkg update

mondain

23.21.150.121:3478
iphone-stun.strato-iphone.de:3478
numb.viagenie.ca:3478
s1.taraba.net:3478
s2.taraba.net:3478
stun.12connect.com:3478
stun.12voip.com:3478
stun.1und1.de:3478
stun.2talk.co.nz:3478
stun.2talk.com:3478

EtienneR

// Get all users
var url  = "http://localhost:8080/api/v1/users";
var xhr  = new XMLHttpRequest()
xhr.open('GET', url, true)
xhr.onload = function () {
	var users = JSON.parse(xhr.responseText);
	if (xhr.readyState == 4 && xhr.status == "200") {
		console.table(users);
	} else {
		console.error(users);

Restuta

Below is the list of modern JS frameworks and almost frameworks – React, Vue, Angular, Ember and others.

All files were downloaded from https://cdnjs.com and named accordingly. Output from ls command is stripped out (irrelevant stuff)

As-is (minified)

$ ls -lhS
566K Jan 4 22:03 angular2.min.js

eliquious

Building

go build -o goencrypt main.go

Generating Keys

mdwhatcott

package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"strconv"
)

func main() {