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Introduction Email service providers (ESPs) such as Gmail, Yahoo, and Outlook monitor the rate at which emails are received from a sender. Sending a large number of emails over a short period or through a single connection may trigger rate limits or cause the sending IP address to be temporarily… Continue Reading How to Configure Recipient-Based Rate Limiting in Postfix

Introduction Amazon Elastic Block Store (Amazon EBS) snapshots provide a reliable way to back up the data stored on an Amazon EC2 instance’s volumes. Automating snapshot creation helps protect critical data, simplifies disaster recovery, and reduces the effort required for manual backups. This article demonstrates a Python script that creates… Continue Reading Python script to take Amazon volume backup of an instance

Introduction FFmpeg is a powerful open-source multimedia framework used to record, convert, stream, and process audio and video files. It supports a wide range of codecs and formats, making it a popular choice for media transcoding, video editing, streaming, and automation tasks. This guide explains how to install FFmpeg from… Continue Reading Install ffmepg on Ubuntu Server

Introduction Redis replication allows data from a Redis master server to be replicated to one or more slave servers. This setup improves data availability, supports read scaling, and provides redundancy in case of server failures. This guide explains how to install Redis and configure a master-slave replication environment. Prerequisites Root… Continue Reading RedisMaster and Slave Setup

Introduction S3cmd is a free and open-source command-line tool used to manage and interact with Amazon S3 and S3-compatible object storage services such as MinIO, DigitalOcean Spaces, Ceph, and others. It allows administrators to upload, download, synchronize, and manage files and buckets directly from the Linux terminal. This document provides… Continue Reading S3cmd Installation on Linux

Introduction Redis is an in-memory data structure store commonly used for caching, session management, message brokering, and real-time applications. It provides a command-line interface (redis-cli) that allows administrators to manage data, monitor server performance, configure runtime settings, and troubleshoot Redis instances. This guide covers commonly used Redis commands for day-to-day… Continue Reading Redis Common Commands

Introduction In environments with multiple Memcache servers, it may be necessary to remove the same cache key from all nodes to ensure data consistency. This Python script allows administrators to delete a single Memcache key or multiple Memcache keys across a specified Memcache cluster. Prerequisites Implementation Step 1 Create a… Continue Reading Script to delete Memcache key on cluster

Introduction MongoDB is an open-source NoSQL database that stores data in flexible, document-based collections instead of traditional tables. It is designed for high performance, scalability, and high availability. A MongoDB replica set (cluster) consists of multiple MongoDB instances that work together to provide data redundancy and automatic failover. Prerequisites Implementation… Continue Reading Mongo Cluster Setup

Introduction The tmpwatch utility helps automatically remove old and unused files from the /tmp directory. Since applications such as Apache and MySQL store temporary files in this location, the partition can fill up over time, potentially causing service interruptions. Using tmpwatch helps keep the /tmp directory clean and prevents disk… Continue Reading Using tmpwatch to clear files from /tmp partition

Recently, we have upgraded MSSQL version from Evaluation version to Web Edition. We would like to post the step in this article which will help someone to upgrade MSSQL.   There are few things which we need to consider while upgrading. +  Lets take a backup of all the database.… Continue Reading Upgrade MS Sql Server from Evaluation version to Web Edition