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+

jiacai2050

/*
 * 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>

jiacai2050

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])))

jiacai2050

package main

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

jiacai2050

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

jiacai2050

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

jiacai2050

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

jiacai2050

//! 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 {

jiacai2050

Async/Await - The challenges besides syntax - Cancellation

This is the second article in a series of articles around Rusts new async/await feature. The first article about interfaces can be found here.

In this part of the series we want to a look at a mechanism which behaves very different in Rust than in all other languages which feature async/await support. This mechanism is Cancellation.

jiacai2050

;; Mail start
(use-package mu4e
  :ensure nil
  :if (executable-find "mu")
  :commands (mu4e)
  :bind (:map mu4e-view-mode-map
         ("f" . mu4e~headers-jump-to-maildir)
         ("9" . scroll-down-command)
         ("0" . scroll-up-command)
         ("&" . my/open-url-in-external)