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I am Harshal, a passionate and creative developer from 🇮🇳 with a strong interest in MERN and DevOps.
Full stack developer with experience in developing and managing web applications. Reactjs, Nextjs, Nodejs, Expressjs, CSS, HTML, JavaScript, MongoDB, Docker, and AWS .
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Callback Function A function passed as an argument to another function, which is then executed inside that function.Callbacks are commonly used in asynchronous programming, where operations (like I/O tasks) are completed without blocking the main thr...
JavaScript is a language that excels at handling asynchronous operations. Its ability to manage tasks like API calls, file reading, and timers without blocking the main thread is powered by a fundamental concept known as the event loop.In this blog p...
Introduction An AWS IAM role is a set of permissions that define what actions and resources a user, service, or application can access within the Amazon Web Services (AWS) environment. Let's Create IAM Role: Go to the AWS Management Console at aws....
Introduction An AWS IAM role is a set of permissions that define what actions and resources a user, service, or application can access within the Amazon Web Services (AWS) environment. Let's Create IAM Role: Go to the AWS Management Console at aw...
Introduction 1> IAM allows you to create and manage individual users within your AWS account. 2> Each user is assigned unique security credentials, such as a username and password or access keys.3> This level of granularity ensures that each entity a...
PostgreSQL is an Object Relational Database Management System.
It's also called ORDMS.
It's an Open-Source Database Management System.
It uses MYSQL standards.
It follows a client-server architecture.
Client Applications: PostgreSQL can be accessed by various client applications such as command-line tools, graphical user interfaces (GUIs), web applications, and programming languages.
Server: The PostgreSQL server is the core component that manages the database and handles client requests. It consists of several processes and components:
Postmaster: This is the main process that manages the database connections, authentication, and other server-level operations.
Background Writer (BGW): It manages the writing of modified data from memory (shared buffers) to disk (data files) to ensure data durability.
Checkpointer: This process writes dirty pages from shared buffers to disk and updates the checkpoint records.
Autovacuum Launcher: It automatically initiates the vacuuming and analyzing of tables to reclaim disk space and update query statistics.
Shared Memory: PostgreSQL uses shared memory to facilitate communication and data sharing among various server processes.
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