Using the TCP dump command-line packet sniffer tool, you can record or filter TCP/IP packets that are sent over a network or are received. Operating systems based on Linux and Unix are compatible with it. You can install this tool using yum by doing the following. yum install tcpdump Must capture 3-way handshaking,

Something EVERY Software Engineer must know about HTTP (Demo), You should first read the essay on the TCP life cycle before reading this one. There are two branches of HTTP. One is HTTP that is persistent, and HTTP that is not. Non persistent HTTP, http non-persistent is 1.0 However, if you are working with a legacy system, you might encounter it occasionally…

You may read more about the TCP life cycle in this article. I believe you recall OSI levels. The OSI layer is in charge of the protocol (TCP,UDP and etc). A http application you create runs on the 7th layer (Application layer) However, HTTP is based on TCP. Above figure…

There is a layer in the OSI model that handles protocols like TCP, UDP, etc. The application layer comes after a few levels. Our HTTP apps operate on the seventh layer when we write them. But HTTP is a TCP-based protocol. What is TCP (Transmission Control Protocol) ? Transmission Control Protocol (TCP) is a standard that defines…

Singleton is a creational design pattern, which ensures that only one object of its kind exists and provides a single point of access to it for any other code.Singleton has almost the same pros and cons as global variables. Although they’re super-handy, they break the modularity of your code. A…

What is Message Broker ? A Message Broker is a software that allows applications, systems, and services to communicate and exchange data. This is accomplished by the message broker by translating messages between formal messaging protocols. …

What is Kafka ? Apache Kafka is a distributed event store and stream-processing platform. It is an open-source system developed by the Apache Software Foundation written in Java and Scala. The project aims to provide a unified, high-throughput, low-latency platform for handling real-time data feeds. Kafka can connect to external systems (for data import/export)…

1. Code Structure . At its simplest, JavaScript is made up of a series of statements and semi-colons. A statement is like a sentence — but in code. For example, this is a statement:

Intro :- Because JavaScript is frequently used on both client-side and server-side development, if you are a software developer, you may already be familiar with it. JavaScript is a scripting language that is both dynamic and lightweight. It was first presented as a scripting language for web development by Netscape in the…