Data recovery center – a new service provided by my company JRB System

I would like to officially announce the commencement of the provision of an additional service performed by my company, which is Data Recovery.The scope of activities that enter the new sector is: Data recovery from hard drives Data recovery from memory cards (SD, xD, CF, MS etc.)Recovering photos or videos from apartments, cameras or other devicesPartition […]

Read More Data recovery center – a new service provided by my company JRB System
June 10th, 2021

Socket.io and Cross Domain Communication

Socket.io (www.socket.io) is POWERFULL and one of the most famous and professional library to real time communication. Socket.IO enables real-time bidirectional event-based communication. It works on every platform, browser or device, focusing equally on reliability and speed. Most well-known usage this library: Real-time analytics – Push data to clients that gets represented as real-time counters, charts or logs. Binary […]

Read More Socket.io and Cross Domain Communication
May 11th, 2021

7 Comments

Setting up node.js cluster for socket.io – A simply way to performance

In this article we will focus on setting up node.js cluster for socket.io. Socket.io is doing multiple requests to perform handshake and establish connection with a client. With a cluster those requests may arrive to different workers, which will break handshake protocol. To solve this problem we can use perfect solution based on sticky-sessions module. […]

Read More Setting up node.js cluster for socket.io – A simply way to performance

Socket.io – Security protection based on local server Token – part 1/3

Security protection applied on http/https server and the mechanisms used regardless of the distribution you are using (e.g. express, feathers, total.js, etc) do not secure socket.io. This is a separate issue that we will look at in this article. We will focus on the 3 most known security mechanisms. In this article we focus on security protection […]

Read More Socket.io – Security protection based on local server Token – part 1/3

Node.js – Protection from Brute Force and DDOS Attacks

  If you are building a Node application with Express or with another framework built on express e.g. feathers.js , Koa.js, Kraken, Sails, socket.io or another frameworks listed on http://expressjs.com/en/resources/frameworks.html, you can use the express-rate-limit middleware to protect Your solution from Brute Force and DDOS Attacks. This middleware prevents website, public REST API, and/or endpoints such as password reset from […]

Read More Node.js – Protection from Brute Force and DDOS Attacks

Agrippa Solutions from Norway (https://www.agrippa.no) is listed on official site expressjs.com and selected from all companies over the world.

Created by me implementation for Agrippa Solutions from Norway (https://www.agrippa.no) is listed on official site IBM on expressjs.com where You can see IBM selected only 21 he best implementation of node.js solutions from whole the world. I am proud that I can create such solution on node.js. https://expressjs.com/en/resources/companies-using-express.html

Read More Agrippa Solutions from Norway (https://www.agrippa.no) is listed on official site expressjs.com and selected from all companies over the world.
May 1st, 2021

The role of mathematicians in the Allied carpet raids on the main goal of the Third Reich

The main targets of the air raids on the Third Reich were not the factories of weapons (tanks, planes, naval ships) or ammunition, as it might seem, but FACTORIES OF BEARINGS. The bombing plan was developed by a specially created cell in the USA, which included MATHEMATICS (Abraham Wald). The Applied Mathematics Panel was established […]

Read More The role of mathematicians in the Allied carpet raids on the main goal of the Third Reich
March 16th, 2021

[Solved] Massive data & Node.js – increasing timeout for request of REST API functions

In case of operations for big data regarding fetching numerous records, operations taking a bit time (e.g. > 3-5 minutes)  or uploading a blob on azure local storage even if we using async operations   node.js in this situations can close or reject current request due to exceed default timeout of request. In this situation we […]

Read More [Solved] Massive data & Node.js – increasing timeout for request of REST API functions
April 8th, 2020

[SOLVED] C# & HttpClient for SSL/TLS: Error The request was aborted: The request was canceled.

Sometimes our software that bases on HttpClient class requests has problem with connecting to services (AZURE or other portals) or REST API functions to https addresses (SSL). We’ve got error: “Error The request was aborted: The request was canceled.” and our connection is rejected at once. That can means that we should verify settings for TLS […]

Read More [SOLVED] C# & HttpClient for SSL/TLS: Error The request was aborted: The request was canceled.
March 31st, 2020

Projects and solutions regarding fuzzy logic, neural networks or AI on AVR ATmega or ESP microcontrollers

My latest projects and solutions regarding fuzzy logic, neural networks or AI (also presented on linkedin) work on AVR ATmega or ESP microcontrollers and their size compared to coins can be seen in the attached picture

Read More Projects and solutions regarding fuzzy logic, neural networks or AI on AVR ATmega or ESP microcontrollers
March 2nd, 2020