DevOps
What is Nginx? Web server, reverse proxy, and load balancer in one
What is Nginx? A high-performance web server that also serves as a reverse proxy and load balancer, handling millions of requests per second. Learn about configuration, real-world use cases, and how it compares to Apache.
What is a Proxy? Forward Proxy, Reverse Proxy and SOCKS5 Explained
A proxy server is an intermediary between client and server. Learn the differences between Forward Proxy, Reverse Proxy, and SOCKS5 with real configuration examples for Squid and NGINX.
What is Kubernetes? The Most Popular Container Orchestration Platform Today
What is Kubernetes? Explore the most powerful container orchestration platform today: architecture, Pods, Deployments, Services, auto-scaling, and when to use K8s.
What is Subnet & CIDR? IP Network Segmentation and Routing
Subnet and CIDR are the foundation of modern network architecture. This article explains subnet masks, /24 notation, host count calculation, and how AWS VPC and Kubernetes use CIDR for network segmentation.
What is Serverless? FaaS, Cold Start, and When to Go Serverless
Serverless is a cloud computing model where you deploy functions without managing servers — cloud handles provisioning, scaling, and billing per invocation. Learn FaaS, BaaS, cold start, execution lifecycle, and when to choose serverless.
What is Apache Kafka? Distributed Event Streaming Platform Explained
Apache Kafka is the open-source distributed event streaming platform invented by LinkedIn. Learn how Kafka's Topic, Partition, Broker, and Consumer Group architecture enables millions of messages per second with replay, fault-tolerance, and low latency.
What is GitLab CI/CD? Automated Pipeline for Build, Test, and Deploy
GitLab CI/CD is a built-in automation platform that runs build, test, and deploy pipelines triggered by every commit. Learn .gitlab-ci.yml, GitLab Runner, and how to build a real-world pipeline.
What is NAT? Network Address Translation Explained
NAT (Network Address Translation) is a technique that lets multiple devices share a single public IP address. Learn how PAT, Static NAT, Dynamic NAT work, and how NAT operates in routers, cloud VPCs, and Docker.
What is an API Gateway? Single Entry Point for Microservices
An API Gateway is the single entry point sitting between clients and microservices, handling routing, authentication, rate limiting and SSL termination. Learn how it works, compare Kong, NGINX, AWS API Gateway and security patterns at the gateway layer.