Deadlock
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Definition: A deadlock is a situation in which two or more processes are waiting for resources that are held by each other, and none of them can proceed.In short, it…
November 2025
Priority-Based Non-Preemptive and Priority-Based Preemptive Scheduling
1. Priority-Based Non-Preemptive Scheduling Definition: In Priority Non-Preemptive Scheduling, each process is assigned a priority.The CPU is allocated to the process with the highest priority (smallest number = highest priority).Once…
Round Robin (RR) Scheduling Algorithm
Definition:Round Robin is a preemptive CPU scheduling algorithm where each process is assigned a fixed time slice or quantum. The CPU executes each process for this fixed amount of time…
OS Types (User Point of View) • OS Types (Features Point of View)
Perspective OS Type Description Example User Point of View Single-User One user at a time Windows 11 Multi-User Many users simultaneously UNIX CLI Command-based interface MS-DOS GUI Icon/menu-based interface macOS…
Explain database administration in mongodb
Database Administration in MongoDB means managing, maintaining, and optimizing MongoDB databases to ensure they are secure, fast, reliable, and always available.A MongoDB Database Administrator (DBA) performs tasks like installation, configuration,…
backup and restore a MongoDB database — works for MongoDB version 8.2 and older (same basic commands).
1. Backup MongoDB Database ✅ Option 1: Backup Entire Database Use the mongodump command. Syntax: Example: This will create: Containing .bson (data) and .metadata.json (indexes). ✅ Option 2: Backup All…
what is a session_set_save_handler in mongodb?
The term session_set_save_handler is not related to MongoDB — it actually belongs to PHP, not MongoDB. Let’s clarify this clearly What is session_set_save_handler? In PHP, session_set_save_handler() is a function used…
How to create replica set in mongodb version 8.2
A replica set in MongoDB is a group of mongod instances that maintain the same data set, providing redundancy and high availability. Step-by-Step Setup for MongoDB 8.2 Replica Set We’ll…
what is mongodb gridfs?
GridFS stands for Grid File System. MongoDB GridFS is a specification for storing and retrieving large files (such as images, videos, audio files, or any binary data) in MongoDB that…