Terminal Programmer

Exploring Profiling Tools for Go: Enhancing Performance Like a Pro Profiling is the process of analyzing an application's runtime behavior to pinpoint performance issues. It helps developers identify where their code spends most of its time and how memory is allocated and released. Profiling tools for Go offer invaluable information for making informed optimizations and delivering a smooth and efficient user experience. Key Types of Profiling in Go CPU Profiling : CPU profiling identifies areas of your code that consume the most CPU time. It helps you understand which functions or methods are taking up the majority of the processing power, allowing you to focus on optimizing those areas. Memory Profiling : Memory profiling reveals memory allocation patterns and potential memory leaks within your application. It provides insights into how your application uses memory and assists in preventing excessive memory consumption. Goroutine Profi...

We are going to explore how basic utility functions like curl, logger and inotifywait will allow us to define a basic file exchange service that you can use to automate the distribution and processing of files among multiple machines In this article we are going to go over an example for defining a systemd service that will allow the user to exchange files with another machine. It will work by specifying a couple of folders for sending and receiving files. These files will be exchanged using the File Transfer Protocol, commonly known as FTP, which is a standard network protocol used for transferring files from one host to another over a TCP-based network, such as the internet. An FTP service serves as an intermediary platform that facilitates the seamless movement of files, providing a reliable and structured way to exchange data. Installation The first step will consist of installing the dependencies required for executing the service. These will be curl...

Building a Web Server from Scratch with Bash Script In the world of web development, the terms "web server" and "programming language" often go hand in hand. However, what if we told you that you could create a simple yet functional web server using nothing but a humble scripting language? In this article, we will explore an example for crafting a basic web server using Bash script, demonstrating the power of simplicity and resourcefulness. The Basics of a Web Server Before diving into the intricacies of a Bash-based web server, let's quickly recap what a web server is. At its core, a web server is software that handles incoming HTTP requests from clients (typically web browsers) and responds by serving the requested resources, such as HTML files, images, or other content. This process involves binding to a port, listening for incoming connections, and sending appropriate responses back to clients. Building Bash Web Server...

A full duplex connection offers several significant advantages in modern communication systems. One of the key benefits is the simultaneous bidirectional data transfer it enables. In the previous article  How to write a concurrent TCP server in Go  we saw how to implement a concurrent TCP server in Go. This time we are going to see how to take the server to the next level, and allow it to broadcast messages to its clients. That way, we can start a communication from either end of the connection. Thus, ending up in a full duplex scenario. We are going to implement a mechanism that allows the server to send messages to all of its clients at the same time. If we wanted to send messages to a specific client, it would just be a matter of keeping track of an ID for each client associated to their corresponding connection. And use that mapping to send the messages to a specific client. Client connection We will start by modelling each clien...

 Building a TCP Concurrent Server in Go: Harnessing the Power of Goroutines In the world of networking and server development, concurrency is a fundamental aspect that enables handling multiple clients simultaneously, leading to better performance and responsiveness. Go, with its built-in concurrency features, provides an excellent platform for building efficient TCP servers. In this article, we'll explore the process of creating a TCP concurrent server in Go, taking advantage of Goroutines to handle multiple client connections concurrently. Understanding TCP Concurrent Servers A TCP server is a fundamental component of network programming that listens for incoming connections from clients and responds to their requests. It operates on the Transmission Control Protocol ( TCP ), a reliable and connection-oriented protocol that guarantees the delivery of data packets in the order they were sent. The TCP server binds to a specific IP address and...

 Encoding JSON-RPC Messages Using WebSockets in Go: A Practical Guide WebSockets and JSON-RPC are powerful technologies that can significantly enhance real-time communication and data exchange in web applications. WebSockets provide full-duplex communication channels over a single TCP connection, while JSON-RPC is a lightweight remote procedure call protocol based on JSON. In this article, we'll explore how to leverage these technologies together to implement an efficient and scalable server in Go. Understanding JSON-RPC JSON-RPC is a simple yet effective protocol for remote procedure calls over HTTP or other transport layers. It allows clients to invoke methods on a server and receive responses in a structured JSON format. The protocol is lightweight, language-agnostic, and easy to implement, making it an excellent choice for web applications. We are going to use the version JSON-RPC 2.0 which follows this format: {"jsonrpc...

 gRPC: The High-Performance Communication Protocol Revolutionizing Distributed Systems In the realm of modern distributed systems, efficient and reliable communication between microservices is crucial. Traditional protocols like REST have served well, but as systems grow in complexity and demand real-time communication, gRPC emerges as a powerful solution. In this article, we'll delve into gRPC, understand its benefits, and explore a practical example in Go. What is gRPC? gRPC is an open-source high-performance Remote Procedure Call (RPC) framework developed by Google. It enables seamless communication between services running on different platforms and languages. gRPC is based on HTTP/2 , which provides multiplexing, stream prioritization, and header compression, leading to faster and more efficient communication compared to REST. Key Features and Advantages of gRPC Protocol Buffers (Protobuf) : gRPC uses Protocol Buffers as the defa...