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PicoRuby (f/k/a mmruby) is an alternative Ruby implementation dedicated to one-chip microcontrollers. The binary fits into less than 256 KB ROM and runs on less than 64 KB RAM. This development was supported by the Ruby Association (RA) Grant program 2020 and mentored by Matz himself! Monstarlab is one of...

Using Policy As Code to manage permissions in REST APIs

Authorization and Authentication (AuthZ and AuthN) are very critical parts of any system for identity and permissions validation and enforcement, AuthN is basically the process to verify who the user is, while AuthZ is the process of validating the user’s permissions to access or perform certain functions/actions.

Azure DevOps Pipelines vs GitHub Actions

In .NET we have been using Azure DevOps Pipelines for our CI/CD needs, but after Microsoft bought GitHub and has promised to support both GitHub Actions along with Azure DevOps Pipelines promising that each platform will be able to perform the same tasks, the answer to which provider to use...

How to use Firebase Cloud functions to send push notifications

This article provides a quick introduction on how to use Firebase Cloud Functions to send push notifications. There are 2 main advantages in using them: A small amount of code can send iOS and Android push notifications at the same time. There is no need for server-side coding as it...

How to test a fire extinguisher?

Once I asked my dad how to test a fire extinguisher. He answered:

Game server synchronization of large amounts of data in a battle

Multiple players interacting at the same time in a game room will generate a lot of data that needs to be synchronized, such as each player’s basic data, change data, skill performance data, damage data, map data, monster data, etc. According to the refresh rate of the game’s FPS, it...

Using JWT in Laravel

Json web token JWT, it is a JSON-based open standard that is implemented to transfer statements between web application environment(RFC 7519).The token is designed to be compact and safe, JWT statements are generally used to pass authenticated user identity information between identity providers and service providers, In order to obtain...

Four tools to improve the efficiency of Flutter development

This article introduces 4 tools that can greatly improve the efficiency of Flutter development.

Spring Boot integrated RabbitMQ

Recently I learned about micro services and here is how Spring Boot integrates RabbitMQ to send messages to other micro services.


In WWDC20, Apple introduced App Widgets to the home screen for multiple platforms(iOS, iPadOS, macOS). With WidgetKit, you can see the most important information from your app by putting widgets on your Home screen or Notification Center.