Ricardo Mauro - rmauro.dev {blog}

Ricardo Mauro

Digital Clock on the wall

Calculate Time Ago with .NET C#

Here is a small extension method over System.DateTime that gives its relative time readable for humans, such as: * one minute ago * 2 minutes ago * one hour ago * 3 hours ago * 3 days ago Check out this extension method over the DateTime structure using switch patterns. public static string AsTimeAgo(

Health Checks on your ASP.NET Core Application

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Health Checks on your ASP.NET Core Application

Health Endpoint Monitoring pattern Health Check in .NET 5 is very simple. With just a few lines of code, you can set up everything to monitor the Health of our Application. Implement functional checks in an application that external tools can access through exposed endpoints at regular intervals. This can

SQL Injection na Prática - Executando o Ataque

SQL Injection na Prática - Executando o Ataque

Primeiro, você sabe (ou lembra-se) o que é SQL Injection? (for english version) Segundo OWASP.org (https://www.owasp.org/index.php/SQL_Injection). A SQL injection attack consists of insertion or "injection" of a SQL query via the input data from the client to the application. A successful SQL

Começando com Machine Learning - Escrevendo um Perceptron

machine-learning

Começando com Machine Learning - Escrevendo um Perceptron

Você sabe o que é um Perceptron? Perceptron é um dos building blocks (componentes) da rede neural feed foward. Uma rede neural é essencialmente baseada em N Perceptrons. Segundo wikipedia: In machine learning, the perceptron is an algorithm for supervised learning of binary classifiers. A binary classifier is a function

Asp.Net Core com MongoDb e Mongo Atlas - C#

Asp.Net Core com MongoDb e Mongo Atlas - C#

Este tutorial cria uma API Web que executa as operações CRUD (criar, ler, atualizar e excluir) em um banco de dados NoSQL do MongoDB. Baseado no artigo Microsoft Docs, criado por Pratik Khandelwal e Scott Addie Modificado por Ricardo Mauro Tempo de leitura: 18 minutos Neste tutorial, você aprenderá como:

C# Conversions - Casting, implicit and explicit conversion

Fist the data types available. int whole numbers long whole numbers (bigger range) float floating-point numbers double double precision decimal monetary values char single character bool boolean DateTime moments in time string sequence of characters Table of implicit conversion made by C#. From To sbyte short int long float double

Azure Kubernets - az cli

Azure Kubernets - az cli

Steps to create Azure Kubernet Services (AKS) though azure cli tool. Demo 1 // Create resource group az group create --name kbgroup2 --location eastus // Create AKS cluster az aks create \ --resource-group kbgroup2 \ --name kbcluster2 \ --node-count 1 \ --enable-addons monitoring \ --generate-ssh-keys Connect to the cluster #if you're in Azure Cloud Shell skip this

Demo - Azure Batch

Demo - Azure Batch

Creating the Resource Group az group create --name "az203_batch_demo001" --location CentralUS Creating the storage account az storage account create \ --name az203batchstoragexd \ --access-tier hot \ --https-only true \ --kind BlobStorage \ --location CentralUS \ --sku Standard_LRS \ --resource-group az203_batch_demo001 Creating the Batch Account az batch account create \ --name az203batchaccountxd \ --storage-account az203batchstoragexd

az cli (bash) create resource though Resource File

az cli (bash) create resource though Resource File

The resource file azuredeploy.json { "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#", "contentVersion": "1.0.0.0", "parameters": { "storageAccountType": { "type": "string", "defaultValue": "Standard_LRS", "allowedValues": [ "Standard_LRS", "Standard_GRS", "Standard_ZRS", "Premium_LRS" ], "metadata": { "description": "Storage Account type" } }, "location": {

Conference API Sample

This is a sample API hosted by Microsoft. https://conferenceapi.azurewebsites.net/?format=json

Enable Local Cache in Azure Web App

Enable Local Cache in Azure Web App

What is Local Cache in Azure WebApp? Local cache in Azure Web is really a cache that caches the storage of your Web App. How to enable it? To enable local cache you should go to your Azure Subscription them navigate to your Web App that you wishs to enable

C# DateTime Cheat sheet - ToString() Format

C# DateTime Cheat sheet - ToString() Format

Cheat sheet with C# DateTime formats. using System; using System.Globalization; public class Program { public static void Main(string[] args) { DateTime dt = DateTime.Now; string[] format = { "d", "D", "f", "F", "g", "G", "m", "r", "s", "t", "T", "u", "U", "y", "dddd, MMMM dd yyyy", "ddd, MMM d \"'\"yy", "dddd,

Demo WebJob Azure - CRON expressions

Demo WebJob Azure - CRON expressions

CRON expressions Azure Functions uses the NCronTab library to interpret CRON expressions. A CRON expression includes six fields: {second} {minute} {hour} {day} {month} {day-of-week} Each field can have one of the following types of values: Type Example When triggered A specific value 0 5 * * * * at hh:05:00 where hh

Enable Azure Disk Encryption though az-cli

Enable Azure Disk Encryption though az-cli

Create Azure Key Vault service az keyvault create \ --name "kvDemo006" \ --resource-group "demo001" \ --location centralUS \ --enabled-for-disk-encryption True Enable disk encryption on VM az vm encryption enable \ --resource-group "kvDemo006" \ --name "devUScWeb003" \ --disk-encryption-keyvault "demo006" \ --volume-type "all" Show disk encryption az vm encryption show \ --resource-group "demo006" \ --name "devUScWeb003"`

Create Azure VM though PowerShell

Create Azure VM though PowerShell

A right to the point guide of how to create Virtual Machines in Azure with Powershell

HSTS - What's it and how to enable it in IIS

HSTS - What's it and how to enable it in IIS

HSTS, what's it? Definition from wikipedia: HTTP Strict Transport Security (HSTS) is a web security policy mechanism which helps to protect websites against protocol downgrade attacks and cookie hijacking. It allows web servers to declare that web browsers (or other complying user agents) should only interact with it using secure

Libraries.io - A Library of frameworks #tip

Theses days I was trying to find the latest version of some framework I was using. Searching on web I finally found this website https://libraries.io/. This nice and complete website has informations about almost every library/framework you know. Take a look, share https://libraries.io/

How to migrate .Net Core 1.0 to 1.1

Hi guys! In this post I'll show how to migrate a .Net project from 1.0 to 1.1 (current the last version) using Visual Studio. Preparing the solution Let's starting by creating our starting project. In Visual Studio go to File -> New Project then choose the template ASP.