Jiacai Liu jiacai2050

Docker Hub 镜像加速器

国内从 Docker Hub 拉取镜像有时会遇到困难，此时可以配置镜像加速器。Docker 官方和国内很多云服务商都提供了国内加速器服务。

Dockerized 实践 https://github.com/y0ngb1n/dockerized

配置加速地址

Ubuntu 16.04+、Debian 8+、CentOS 7+

CPU Usage :

(1 - avg(irate(node_cpu_seconds_total{mode="idle"}[10m])) by (instance)) * 100

Memory Usage :

100 * (1 - ((avg_over_time(node_memory_MemFree_bytes[10m]) + avg_over_time(node_memory_Cached_bytes[10m]) + avg_over_time(node_memory_Buffers_bytes[10m])) / avg_over_time(node_memory_MemTotal_bytes[10m])))

这个问题是在《形单影只的 Socket》最后留的问题，这里给出一个思路供大家参考，看下那篇文章再来看这个效果可能会更好。

传送门：测试环境：Ubuntu 14.04 好了，进入正题。首先构造一个 TCP 连接，这里使用形单影只的 socket 来启动一个 echo server

$ nc -vp 11111 localhost 11111
Connection to localhost 11111 port [tcp/*] succeeded!

$ ss -ap | grep 11111

	const std = @import("std");

	const BIND_HOST: []const u8 = "0.0.0.0";
	const BIND_PORT: u16 = 8090;
	const NUM_WORKER_THREADS: u32 = 16;
	const DOWNLOAD_DIR: []const u8 = "/tmp";
	const MAX_FILE_SIZE: usize = 1024 * 1024 * 500; // 500M
	// const UPSTREAM_URL: []const u8 = "https://fs.liujiacai.net/zigbuilds";
	const UPSTREAM_URL: []const u8 = "https://ziglang.org";

	wget 'https://github.com/google/flatbuffers/archive/refs/tags/v24.3.25.tar.gz'

	tar xzf flatbuffers-24.3.25.tar.gz
	pushd flatbuffers-24.3.25
	cmake -G "Unix Makefiles"
	make
	make install
	ldconfig
	flatc --version
	rm -rf flatbuffers-24.3.25

	/*
	* Demo of libpq.
	* Build: g++ libpq-demo.cc -o libpq-demo -lpq
	* Run: ./libpq-demo
	*/

	#include <arpa/inet.h>
	#include <iostream>
	#include <libpq-fe.h>
	#include <sstream>

	package main

	import (
	"encoding/xml"
	"flag"
	"fmt"
	"go-apps/pkg/flagx"
	"go-apps/pkg/util"
	"io"
	"log"

	1
	00:00:00,000 --> 00:00:06,800
	大家好,今天是2021年6月27号,是InMessTalk的第一期。

	2
	00:00:06,800 --> 00:00:11,700
	这一期主要由我来讲一下这个节目的背景。

	3
	00:00:11,700 --> 00:00:17,200

	[dependencies]
	rand = "0.8.5"
	xorfilter-rs = { git = "https://github.com/datafuse-extras/xorfilter", features = [
	"cbordata",
	], tag = "databend-alpha.4" }

	//! Tree(1) in Zig
	//! https://linux.die.net/man/1/tree

	const std = @import("std");
	const process = std.process;
	const fs = std.fs;
	const mem = std.mem;
	const testing = std.testing;

	const VisitedEntry = struct {