Network provides practical guides on business automation
How DNS Resolution Works: Recursive Resolvers, Root Servers, TLDs and Authoritative DNS Every time you open a website, connect to an API, send an email, or access a cloud service by name, the Domain Name System performs one of the…
DNS Record Types Explained: A, AAAA, CNAME, MX, TXT, NS, PTR and SRV The Domain Name System (DNS) does much more than translate domain names into IP addresses. Every website, email platform, cloud service, enterprise application, and network infrastructure depends…
Data Center Architecture Explained: Servers, Racks, Power, Cooling, Network Fabric and Tier Levels Modern websites, cloud platforms, databases, artificial intelligence systems, business applications, and enterprise networks ultimately depend on physical infrastructure somewhere. Even when an organization says that its infrastructure…
Storage Architecture Explained: Block, File, Object, DAS, NAS and SAN Storage Architecture Explained: Block, File, Object, DAS, NAS and SAN Storage is one of the foundations of modern IT infrastructure. Databases, virtual machines, application logs, container volumes, websites, backups, analytics…
Disaster Recovery Explained: RTO, RPO, Backup, Replication, Failover and Multi-Region DR Modern infrastructure is built with an uncomfortable assumption: Eventually, something important will fail. A server can fail. A storage system can become corrupted. A database can lose data. A…
Server Clustering Explained: HA Clusters, Quorum, Failover, Fencing and Distributed Architecture A single server is easy to understand. It has its own CPU, memory, storage, operating system, network interfaces, applications, and processes. But it also creates an obvious architectural problem:…
High Availability Explained: Redundancy, Failover, Clustering, Multi-AZ and Multi-Region Architecture Modern infrastructure is not designed around the assumption that systems will never fail. Servers fail. Disks fail. Network links fail. Applications crash. Availability zones can experience outages. Databases can become…
Load Balancing Explained: Layer 4 vs Layer 7, Algorithms, Health Checks, Nginx, HAProxy and Cloud Load Balancers Modern applications cannot rely indefinitely on a single server. A simple application may begin with: Internet │ ▼ Application Server But as traffic…
Reverse Proxy Explained: Nginx, Load Balancing, SSL, Caching and Security Modern web applications rarely expose their application servers directly to the public internet. A production request commonly passes through several infrastructure layers before reaching the code responsible for generating a…
CDN Caching Explained: Cache-Control, TTL, Cache Keys, HIT vs MISS and Edge Caching Architecture Caching is one of the most powerful—and frequently misunderstood—technologies behind modern web performance. A website may run on extremely powerful servers, use a high-performance database, and…