fhferreira

#!/usr/bin/env python
import gzip
import os
import sys
import re

INPUT_DIR = "nginx-logs"

lineformat = re.compile(r"""(?P<ipaddress>\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}) - - \[(?P<dateandtime>\d{2}\/[a-z]{3}\/\d{4}:\d{2}:\d{2}:\d{2} (\+|\-)\d{4})\] ((\"(GET|POST) )(?P<url>.+)(http\/1\.1")) (?P<statuscode>\d{3}) (?P<bytessent>\d+) (["](?P<refferer>(\-)|(.+))["]) (["](?P<useragent>.+)["])""", re.IGNORECASE)

fhferreira

function telefone_validation(telefone) {
    //retira todos os caracteres menos os numeros
    telefone = telefone.replace(/\D/g, '');

    //verifica se tem a qtde de numero correto
    if (!(telefone.length >= 10 && telefone.length <= 11)) return false;

    //Se tiver 11 caracteres, verificar se começa com 9 o celular
    if (telefone.length == 11 && parseInt(telefone.substring(2, 3)) != 9) return false;

fhferreira

<?php
// php cluter-quick-check --host <host> --port <port> [--auth password]

function panicAbort($str_msg) {
    fprintf(STDERR, "Error: $str_msg\n");
    exit(-1);
}

function panicClusterSlotsError($arr_slots, $str_context) {
    $str_slots = print_r($arr_slots, true);

fhferreira

Sample config for 2 million web socket connection

    sysctl -w fs.file-max=12000500
    sysctl -w fs.nr_open=20000500
    # Set the maximum number of open file descriptors
    ulimit -n 20000000

    # Set the memory size for TCP with minimum, default and maximum thresholds 
 sysctl -w net.ipv4.tcp_mem='10000000 10000000 10000000'

fhferreira

Adjusting child processes for PHP-FPM (Nginx)

When setting these options consider the following:

• How long is your average request?
• What is the maximum number of simultaneous visitors the site(s) get?
• How much memory on average does each child process consume?

Determine if the max_children limit has been reached.

• sudo grep max_children /var/log/php?.?-fpm.log.1 /var/log/php?.?-fpm.log

fhferreira

Assuming PHP is compiled with debug enabled.

$ gdb /usr/sbin/php-fpm

Then:

r --nodaemonize --fpm-config /etc/php7/fpm/php-fpm.conf

fhferreira

FROM php:7.4-fpm-alpine
WORKDIR "/application"

# Install essential build tools
RUN apk add --no-cache \
    git \
    yarn \
    autoconf \
    g++ \
    make \

fhferreira

#!/bin/bash

echo
echo "Welcome to the Bitcoin address generator!"
echo "input private key (32 bytes, hex format)"
read priv
echo ""
echo "#####################################"
# priv=0C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D # Testing only

fhferreira

var request = require('request');
const bitcoin = require('bitcoinjs-lib');
var buffer = require('buffer');
const bitcoinNetwork = bitcoin.networks.testnet;

var rootUrl = "https://api.blockcypher.com/v1/btc/test3";


//create wallets
const TestNet = bitcoin.networks.testnet3;

fhferreira

Learn Go in ~5mins

This is inspired by A half-hour to learn Rust and Zig in 30 minutes.

Basics

Your first Go program as a classical "Hello World" is pretty simple:

First we create a workspace for our project: