remote

Rsync is a very flexible network-enabled syncing tool. Due to its ubiquity and its popularity as a tool for system scripts, it's included on most Linux distributions by default. It efficiently copies and sync files to or from a remote system. It’s faster than scp because rsync uses a remote-update protocol which allows transferring just the differences between two sets of files. The first time, it copies the whole content of a file or a directory from source to destination but from next time, it copies only the changed blocks and bytes to the destination.

The physical part of the controller is finished but what about the brain? Once more, our decision falls on Arduino Nano. It perfectly fits by size providing all the necessary functionality. For programming a Nano board we need a USB to serial interface which can be hooked up to the programing header located on the top side of our controller.

Radio control cars are small vehicles powered by electric or gas motors that can be remotely controlled by a transmitter. The transmitter sends signals to a receiver on the car, allowing the operator to control the car's speed, direction, and steering. Radio control cars are available in a variety of sizes, from miniature models that can fit in the palm of your hand to large off-road vehicles that can climb over rough terrain.

Controlling devices over a distance opens lots of possibilities. Our Arduino roadmap contains many projects that must be controlled remotely and sometimes on a long-distance. Of course, it can be done with a PC but our experience has shown that it becomes complicated when you need long way, portable and rapid communications. Our solution was designing a multi-functional remote controller, we have called it AirControl.

Redis is an open-source in-memory key-value data store. It can be used as a database, cache, message broker and supports various data structures such as Strings, Hashes, Lists, Sets, etc... Apart from its performance and flexibility, Redis stands out with its wide language support, high availability, and automatic partitioning.

Secure Shell (SSH) is a protocol that provides secure command-line access to a remote server. By using SSH, you can remotely log in and run commands as if you were sitting right at the server.

The benefit of using SSH over other methods of remote access is that, as the name suggests, communications are securely encrypted, protecting the traffic flowing to and from the server. Data is encrypted at both ends of the client/server connection using a digital security certificate and access credentials are also protected.

Based on the solution of designing multi-functional remote controller and being aware of the needs we started building the joystick. The cover with controls is ready for use but we miss the most important part: the microcontroller. Once more, our decision falls on Arduino Nano. It perfectly fits by size providing all the necessary functionality.

Many applications start their web server and database hosted on the same machine. It's simpler, cheaper and easier to manage. However, as our application grows , a setup like this can bring security issues and scalability problems. A common solution is to separate our database from the application: creating a dedicated database server and allowing applications to connect remotely. This setup is more secure, it can provide you a better analysis of the bottlenecks and definitely makes the scalability easier.