xeoncross

I have a pretty constant-use case in mind for collecting client metrics with different loads and spikes throughout the day and am mostly interested in paying a little extra to not have to manage the RDS/Aurora server instances. I basically just need a k/v store but need to do report queries/scans so DynamoDB isn’t a good fit. (COUNT(*) FROM, SUM, etc..)

Slow start

Looks like a minimum of 5 minutes of usage each time the database is activated and I’m pretty sure my load will never let the database shutdown so that might solve the cold-start issue.

https://aws.amazon.com/rds/aurora/faqs/?nc=sn&loc=6

xeoncross

Better UI's

Look at using Tailwind and styled-components (or another styled library) to build better unique UI's without using bootstrap.

• https://tailwindcss.com/docs/extracting-components/ (why to write custom components using HTML only)
• https://dev.to/ryanlanciaux/tailwind-with-react-2ncl (how to use styled to avoid a React mess of attributes)

Main issue, standard responsive sidebar+nav header. You know, that design that hides the sidebar on small devices unless you click the header button.

xeoncross

Easiest Method: SQL

Simply let MySQL know you want to avoid table locks when doing the schema change.

ALTER TABLE `example` ADD `example_column` TINYINT(1) DEFAULT NULL,
ALGORITHM=INPLACE, LOCK=NONE;

You will probably want to detach it from your session as it might take hours/days.

xeoncross

With most of the companies I’ve worked with I needed to store basic client+timestamp activity logs in a database. Could be access logs, ad impressions, thread/post views, email activity, campaign clicks, etc.. it’s always some client identifier + a timestamp. Then I need a report (SUM) of how many events exist in a given block of time. However, I also often need the actual individual rows so I can look at how a certain client itself performed over a certain block of time.

Storing 8/16 byte client ids + 4 byte timestamps is rather costly when doing this hundreds of thousands/millions of times per day. What am I looking for?

Originally I thought I might have a good use-case for time-series with bitmaps for each date (or time deltas). However, often the clients are very sparse so I might only see them a few times before they disappear and the cost of generating a bitmap for the whole search space is more than simply storing a few regular records.

ip+timestamp+someid
email+timestamp+someid
user_id+timestam

xeoncross

import $ from "jquery";
import "bootstrap";
import "bootstrap/dist/css/bootstrap.css"; // Import precompiled Bootstrap css
import "@fortawesome/fontawesome-free/css/all.css";
import "./offcanvas.css";
import Holder from "holderjs";

$(() => {
  "use strict";

xeoncross

package zaplog

import (
	"go.uber.org/zap"
	"go.uber.org/zap/zapcore"
)

// https://github.com/uber-go/zap/blob/master/config.go#L40-L127
// For testing use https://godoc.org/go.uber.org/zap#NewNop

xeoncross

• any: magic, ill-behaved type that acts like a combination of never (the proper [bottom type]) and unknown (the proper [top type])
  • Anything at all is assignable to any, and any is assignable to anything at all.
  • Identities: any & AnyTypeExpression = any, any | AnyTypeExpression = any
  • Key TypeScript feature that allows for [gradual typing].
• unknown: proper, well-behaved [top type]
  • Anything at all is assignable to unknown. unknown is only assignable to itself (unknown) and any.
  • Identities: unknown & AnyTypeExpression = AnyTypeExpression, unknown | AnyTypeExpression = unknown

• Prefer over any whenever possible. Anywhere in well-typed code you're tempted to use any, you probably want unknown.

xeoncross

AOE2HD - For Mac OSX

Estimated time: 10 minutes

Notice

PlayOnMac does not work on macOS Catalina, and issues have been reported with the latest version of Steam. Updating is in progress, read more here.

When the updates are released this guide will be updated.

xeoncross

When using VSCode for testing Go code you probably want to enable the editor to show log output as well.

Open up your settings.json file and add

"go.testFlags": ["-v"],

microsoft/vscode-go#2115

If that is not enough (which it should be)

xeoncross

namespace LeanCrypt {

    const PBKDF2_ITERATIONS = 100_000

    export async function encrypt(plainText: string, key: CryptoKey): Promise<string>
    export async function encrypt(buffer: ArrayBuffer, key: CryptoKey): Promise<LeanCrypted>

    export async function encrypt(data: string | ArrayBuffer, key: CryptoKey): Promise<string | LeanCrypted> {
        let dataIsString = false
        let buffer: ArrayBuffer