Eclit engineering library

ENGINEERING
Archive.

Guides on disaster recovery, backup, cloud architecture and infrastructure operations, written from field experience, by the engineers who do the work.

ENGINEERINGArchive.

Zabbix 8.0 LTS: What Changed and Who Should Upgrade?

Black Friday System Readiness: A Technical Guide

What Is a NOC? What It Does and How It Differs from a SOC

Reliability Friday 11: Terraform Drift, and Why "No changes" Is Not Proof

PHP2Shell: A 5-Step Checklist for the Critical PHP Vulnerabilities

What Is Elioplus? How the Channel Partner and MSP Platform Works, and Whether to Use It

What Is a VDS? Difference from VPS, How It Works, How to Choose One

What Is SMTP? How Email Travels and the Difference Between Ports 25, 465 and 587

What Is OCR? How It Works, Use Cases and Limits

What Are the OSI Layers? The 7-Layer OSI Model and the TCP/IP Difference

What Is a Gateway? Difference from a Router and the Types

What Is HTTP? HTTPS Difference, Methods, Status Codes and HTTP/3

What Is an Intranet? Difference from Internet and Extranet, How to Build One

What Is an Exploit? Zero-Days, Exploit Kits and How to Defend

What Is APM? How Application Performance Monitoring Works

What Is n8n? What It Does, Deployment Options and Licensing

What Is Cloud Migration? Strategies, Steps and Risks

What Is a Disaster Recovery Site (FKM)? How to Build One and Who Must Have It

What Is ISO 27001? How Certification Works and Who Must Have It

Reliability Friday 10: Why a Firewall Drops Packets at 30% Bandwidth

What Is Backup as a Service (BaaS)? How Cloud Backup Works

What Are IT Services? Types and IT Service Management (ITSM)

What Is SQL Injection (SQLi)? Types and How to Prevent It

What Is DRaaS? How Disaster Recovery as a Service Works

What Is XSS (Cross-Site Scripting)? Types and Prevention

What Is a Brute Force Attack, and How Do You Prevent It?

What Is DBaaS (Database as a Service)? Managed Databases

What Is a VPC (Virtual Private Cloud)? Subnets and Security

What Is Edge Computing? Architecture and Use Cases

What Is AI? How It Works, Types and Examples

What Is Machine Learning? Deep Learning and Neural Networks

What Is an AI Agent? Agentic AI and How AI Agents Work

What Is MCP (Model Context Protocol)? Servers and Security

What Is RAG (Retrieval-Augmented Generation)? How It Works

What Is MLOps? Running Machine Learning Models in Production

What Is Data Poisoning in AI, and How Do You Prevent It?

What Is ISO/IEC 42001? The AI Management System (AIMS)

What Is SQL? SQL Commands, MySQL and SQL Server Explained

What Is PostgreSQL? Features, Versions and MySQL Differences

What Is NoSQL? Redis, MongoDB and SQL vs NoSQL

What Are ETL and ELT? Data Warehouse vs Data Lake

What Is an API? REST APIs, API Gateways and API Security

What Is Git? GitHub vs GitLab Explained

What Is DevOps? The DevOps Engineer Role and DORA Metrics

What Is CI/CD? Continuous Integration, Delivery and Jenkins

What Is Disaster Recovery? How to Build a DR Plan

What Is KVKK? Türkiye's Law No. 6698, Obligations and Fines

What Is Digital Transformation? Why It Matters, How to Do It

What Is a Cloud Server? How It Works and How to Choose One

What Is Business Continuity? BCM and ISO 22301

What Is Business Email? Management and Security

What Is Kubernetes? Pods, Nodes and Clusters Explained

What Is DNS and How Does It Work? Servers and Record Types

What Is DHCP and How Does It Assign IP Addresses?

What Is a Router? How It Differs From a Modem and Switch

What Is a Network Switch? Types and Switch vs Router

What Is a VLAN? Virtual LANs, Trunk and Access Ports

What Is NAT? Network Address Translation, PAT and CGNAT

What Is a CDN? How a Content Delivery Network Works

What Is an SSL Certificate? SSL vs TLS vs HTTPS

What Is a Web Server? NGINX, Apache and IIS Explained

What Is Cybersecurity? Types, Threats and Core Controls

What Is Network Security? Layers and Core Controls

What Is a Firewall? Types, NGFW and DMZ Explained

What Is a VPN and How Does It Work? Enterprise VPN vs ZTNA

What Is a DDoS Attack? Types, Botnets and Protection

What Is Endpoint Security? Antivirus, EDR and XDR

What Is Malware? Types, Trojans and Protection

What Is Ransomware? How Attacks Work and How to Prevent Them

What Is Phishing? Types, Warning Signs and Defenses

What Is Social Engineering? Attack Types and Defenses

What Is Patch Management? Patches vs Updates vs Upgrades

What Is MFA? Two-Factor and Multi-Factor Authentication

What Is IAM? Identity and Access Management, PAM and SSO

What Is DLP (Data Loss Prevention)? How Does It Work?

What Is a Database Management System (DBMS)? Types, Examples

What Is NAS? Network Attached Storage vs SAN

What Is RAID? RAID 0, 1, 5, 6 and 10 Explained

What Are CAPEX and OPEX? The Difference in IT Spending

ENGINEERING
Archive.