s4553711

package com.ck.server;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.FixedRecvByteBufAllocator;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;

huatx

package com.googletwo.jdmall.util;

import java.util.regex.Pattern;

/**
 * 校验器：利用正则表达式校验邮箱、手机号等
 * @author along
 * @time 2016/7/10  13:49
 * @desc ${TODD}
 */

eagleon

 某个时刻的实时qps监控：
tail /var/log/nginx/2012-08-25-taobao-access_log -f --pid=19139|grep "`date +%Y:%m:%d:%T`"|wc -l;
统计10秒中的总qps：
tail /var/log/nginx/2012-08-25-taobao-access_log -f -s 10 --pid=19139|wc -l
统计10秒中的平均qps：
echo "`/var/log/nginx/2012-08-25-taobao-access_log -f -s 10 --pid=19139|wc -l`/10"|bc

sieyip

Installing Kafka on Mac OS X

Install Homebrew

Homebrew is a great little package manager for OS X. If you haven't already, installing it is pretty easy:

ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"

essandess

S/MIME Encrypted Email Example with Gmail and Comodo

A quick how-to installation for secure S/MIME installation for a Gmail account on macOS. This certificate can be used to simultaneously encrypt and sign emails.

Obtain and install an S/MIME Certificate

0. Create a unique revocation passphrase in a password manager—long, random, unique.
1. Browse to Comodo and request a free, secure email certificate:

• Enter your name, email address, and specify the maximum 2048 bit length
• Enter your revocation passphrase in case your private key is ever stolen or compromised

malzantot

import gym
import numpy as np

def gen_random_policy():
	return (np.random.uniform(-1,1, size=4), np.random.uniform(-1,1))

def policy_to_action(env, policy, obs):
    if np.dot(policy[0], obs) + policy[1] > 0:
    	return 1
    else:

making

Spring MVC

$ siege -b -c 100 -r 10 http://localhost:8080

Transactions:		        1000 hits
Availability:		      100.00 %
Elapsed time:		       10.55 secs

inadarei

Network Classes

IP Addresses identify both a network as well as host on a network. Depending on the class of a network, certain amount of bits in the IP (32 bits overall) are allocated for network adressing and the rest is for: adressing the host on the network.

1. Class A: first octet is network, last three: host
2. Class B: first two octets are for network, last two: host
3. Class C: first three octets are for network, only last octet is for host.

Furthermore, looking at the IP itself, you can tell which class of IP it is, using the following rules:

malzantot

import numpy as np
import time

import gym

def run_episode(env, policy, episode_len=100, render=False):
    total_reward = 0
    obs = env.reset()
    for t in range(episode_len):
        if render:

malzantot

import numpy as np
import random
import time
import gym
from gym import wrappers

def run_episode(env, policy, episode_len=100):
    total_reward = 0
    obs = env.reset()
    for t in range(episode_len):