tianchaijz tianchaijz

Gen cert

openssl req -x509 -nodes -newkey rsa:2048 -sha256 -keyout client.key -out client.crt -subj "/C=US/ST=FL/L=Ocala/O=Company/CN=x.org"

tunnel.service

Collection of sysctl networking notes

List & reloading changes
Summary details of each connection status
Settings tweaking in /etc/sysctl.conf
- Detailed setting notes
- Control TIME_WAIT and connection tracking timeouts
Miscellaneous
- Nginx Plus additions
Further reading

Raft

Paper

High Traffic Server Settings on CentOS 8

I recently did some work to optimize the network configuration of a CentOS 8 based web server that receives a lot of traffic.

There is a lot of information on the web for this and it distills down to a minimum recommended configuration, and a recommended configuration.

The minimum recommended configuration should be sufficient for servers with less than 10Gb, and the recommended configuration should be sufficient for servers with 10Gb or more.

Problems & Solutions for Interaction Between C and Go

At Vimeo, on the transcoding team, we work a lot with Go, and a lot with C, for various tasks such as media ingest. This means we use CGO quite extensively, and consequently, have run into bits that are perhaps not very well documented, if at all. Below is my effort to document some of the problems we've run into, and how we fixed or worked around them.

Many of these are obviously wrong in retrospect, but hindsight is 20/20, and these problems do exist in many codebases currently.

Some are definitely ugly, and I much welcome better solutions! Tweet me at @daemon404 if you have any, or have your own CGO story/tips, please! I'd love to learn of them.

Table of Contents

	"""
	micromusic.py - A GPT that learns to compose melodies.
	Pure Python, zero dependencies, one file.
	Inspired by @karpathy's microgpt. Same algorithm, different domain.
	Instead of learning the pattern of names, it learns the pattern of music

	python micromusic.py trains on CPU, prints hallucinated melodies
	python micromusic.py --save same + saves MIDI files you can listen to

	@kaizenman

	package main

	import (
	"fmt"
	"golang.org/x/net/http2/hpack"
	)

	func main() {
	fmt.Println("nginx", "→", Encode("MYWS"))
	fmt.Println("nginx", "→", Encode("nginx"))

	package main

	import (
	"fmt"
	"net/http"
	"os"
	"path"
	"strconv"
	)

	当年，微软规定的编码风格是，（变量名里面）2个或3个字母的缩写词必须全部大写，4个或4个以上字母的缩写词必须首字母大写。

	-- Chris Wilson（前微软员工）回答为什么 XMLHttpRequest 会有如此奇葩的大小写组合。