shoito shoito

サーバサイドとReact

要約: Reactをサーバサイドで使うときも、クライアントサイドのように圧縮(code eliminate)しないと遅いよ

Reactはdev向けのコードを大量に含んでいる。これはprocess.env.NODE_ENV !== 'production'の時実行されるassertや警告などが主となりproductionには必要ない。そのため、process.env.NODE_ENV = 'production'をしないとかなり不利な結果を得る。

I tend to agree that "compiling server side code with webpack to remove access to process" is not what Node developers would typically do, and likely many React users are not even aware of this possibility. So the current results are probably more representative of React SSR perf in the wild. However, it can also be a bit unfair to not show React's perf with full optimization.

Get/set ID3 meta tags using ffmpeg

A quick guide on how to read/write/modify ID3 metadata tags for audio / media files using ffmpeg.

FFmpeg has a free-form command line option that allows the user to specify key-value-pairs for encoding metadata. Let's take a look.

1. Read ID3 metadata

To list all global metadata tags for a media file, just set an input but no output file.

エンジニア向け研修

CARTA HOLDINGS（旧VOYAGE GROUP）
- 技術広報が新卒研修<Open AIハッカソン>をスパイしてみた - (2023/04/11)
- @t_wadaに学ぶテスト駆動開発【CARTA 23新卒研修】 - (2023/04/19)
- 【新卒研修】監修者@t_wadaと読む！プログラマが知るべき97のこと読書会 - (2024/04/09)
Classi
- 当たり前にリリースしていく ~ 新卒研修編 - (2021/05/20)
- リモートワークのための質問力向上研修を実施しました - (2021/12/07)
CyberZ
良いコードとは何か - エンジニア新卒研修スライド公開 - (2021/04/27)

ABToggleButtonのような実装を各Toggleしたいコンポーネントごとに作る
- クラスが増える
- class ABToggleButton extends React.Component{}
- ToggleButtonごとに明示的な名前をつけられる
- <ABToggleButton isEditing={true}/>
- 必要なコンポーネント = 3ファイル
関数を使う
- 引数にa, b
- createToggleButton(a, b);

高階関数を使うパターン

時雨堂コトハジメ

更新:	2024-05-22
作者:	@voluntas
バージョン:	2024.1
URL:	https://voluntas.github.io/

typo などは https://x.com/voluntas までご連絡ください。

Benchmarking Nginx with Go

There are a lot of ways to serve a Go HTTP application. The best choices depend on each use case. Currently nginx looks to be the standard web server for every new project even though there are other great web servers as well. However, how much is the overhead of serving a Go application behind an nginx server? Do we need some nginx features (vhosts, load balancing, cache, etc) or can you serve directly from Go? If you need nginx, what is the fastest connection mechanism? This are the kind of questions I'm intended to answer here. The purpose of this benchmark is not to tell that Go is faster or slower than nginx. That would be stupid.

So, these are the different settings we are going to compare:

Go HTTP standalone (as the control group)
Nginx proxy to Go HTTP
Nginx fastcgi to Go TCP FastCGI
Nginx fastcgi to Go Unix Socket FastCGI

時雨堂を支える技術

日時:	2024-11-10
作:	時雨堂
バージョン:	2024.5
URL:	https://shiguredo.jp/

時雨堂クラウドサービスを支える技術

	import EIP712Domain from "eth-typed-data";
	import BigNumber from "bignumber.js";
	import * as ethUtil from 'ethereumjs-util';
	import { ethers } from "ethers";
	import axios from "axios";

	/*
	* Safe relay service example
	* * * * * * * * * * * * * * * * * * * */

	Content-Type: multipart/mixed; boundary="==BOUNDARY=="
	MIME-Version: 1.0

	--==BOUNDARY==
	MIME-Version: 1.0
	Content-Type: text/cloud-boothook; charset="us-ascii"

	#!/bin/bash +x
	# optionally set ECS agent options (increase base container size)
	cloud-init-per once docker_options echo 'OPTIONS="${OPTIONS} --storage-opt dm.basesize=100G"' >> /etc/sysconfig/docker

	require 'elasticsearch'

	# defaults to "localhost"
	client = Elasticsearch::Client.new log: true

	SCHEDULER.every '5s', :first_in => 0 do \|job\|
	health = client.cluster.health
	send_event('es_health', {value: health['status']})
	end