Luu Ninh ninhxuanluu

accountsd using 400% CPU on MacOS Catalina 10.15.7 (19H2)

TL;DR: Still open - see below.

This morning I woke up to some not-so-nice surprise - my 2018 MPB 13" would be kind of totally unusable. The accountsd process was stable at 400%, battery was going like ice-cream in the Sahara, and opening up LibreOffice was like a major achievement.

I did check the logs (that were growing at like 500 lines per second) and I saw a lot of lines at FAULT level:

fault 07:54:04.271342+0200 accountsd Unentitled access by client 'CallHistoryPlugi' (selector: accountsWithAccountType:handler:)

Fix Task Manager blurriness on different DPI monitors in Windows 10

Task Manager on Windows 10 is blurry on secondary monitors if they have a different DPI from the primary monitor. This is because Task Manager is only PROCESS_SYSTEM_DPI_AWARE, despite being a relatively new application (a new Task Manager was introduced in Windows 8). This can be confirmed by using a tool such as Resource Hacker and checking the manifest file for this:

<asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">
    <dpiAware>true</dpiAware>
    <autoElevate>true</autoElevate>
</asmv3:windowsSettings>

Migrations & Seeding

What are migrations??

Migrations are a way to make database changes or updates, like creating or dropping tables, as well as updating a table with new columns with constraints via generated scripts. We can build these scripts via the command line using knex command line tool.

To learn more about migrations, check out this article on the different types of database migrations!

Creating/Dropping Tables

Knex Setup Guide

Create your project directory

Create and initialize your a directory for your Express application.

$ mkdir node-knex-demo
$ cd node-knex-demo
$ npm init

Shallow

Real unit test (isolation, no children render)

Simple shallow

Calls:

constructor
render

We are building a Node.js service which will need asynchronous support for tasks like sending emails. Here's our evaluation:

kue
- https://github.com/Automattic/kue
- Good: Seems well documented
- Good: Supports retries and backoff
- Good: Uses Redis so 1 less thing to maintain
- Bad: Only supports Redis so have to wary of key eviction at later stages of growth
- Bad: Slow to resolve issues
http://isitmaintained.com/project/Automattic/kue

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

	/*
	* Handling Errors using async/await
	* Has to be used inside an async function
	*/
	try {
	const response = await axios.get('https://your.site/api/v1/bla/ble/bli');
	// Success 🎉
	console.log(response);
	} catch (error) {
	// Error 😨

	/*
	This .scss loop will create "margin helpers" and "padding helpers" for use in your web projects.
	It will generate several classes such as:

	.m-r-10 which gives margin-right 10 pixels.
	.m-r-15 gives MARGIN to the RIGHT 15 pixels.
	.m-t-15 gives MARGIN to the TOP 15 pixels and so on.

	.p-b-5 gives PADDING to the BOTTOM of 5 pixels
	.p-l-40 gives PADDING to the LEFT of 40 pixels

	var Col = require('react-bootstrap/lib/Col')
	var PageHeader = require('react-bootstrap/lib/PageHeader')
	var React = require('react')
	var Row = require('react-bootstrap/lib/Row')
	var {connect} = require('react-redux')
	var {reduxForm} = require('redux-form')

	var DateInput = require('./DateInput')
	var FormField = require('./FormField')
	var LoadingButton = require('./LoadingButton')