All Articles

Backend

Gin Validation, File Uploads and Pagination in Go

Gin validation and pagination done right: bind JSON, query and path params, return clear per-field errors, accept image uploads safely with FormFile, and paginate with a concurrent total count.

Sep 24, 202610 min read

Backend

Gin JWT Authentication and Casbin RBAC in Go

Secure a Gin API with JWT and Casbin: how Gin middleware works, bcrypt password hashing, the gin-jwt login flow, reading the token payload, Casbin RBAC policies and protecting route groups.

Sep 24, 202610 min read

Backend

Build a Go REST API with Gin, GORM and PostgreSQL

Build a Go REST API with Gin and GORM on PostgreSQL: project layout, env config with godotenv, models, versioned migrations, idempotent seeds, CRUD handlers, route groups and CORS.

Sep 24, 202610 min read

DevOps

Multi-Layer Load Balancing: DNS, Anycast and Ingress

How multi-layer load balancing works from DNS to pod: scaling the ingress controller, DNS round-robin limits, GSLB and geo routing, Anycast with BGP, Cloudflare pools, and externalTrafficPolicy.

Sep 24, 202610 min read

DevOps

Running Kafka with KRaft on Kubernetes: A Practical Setup

A practical guide to Kafka KRaft on Kubernetes: broker and controller roles, ZooKeeper vs KRaft, replication and min.insync.replicas, StatefulSet with a headless Service, and advertised listeners.

Sep 24, 202610 min read

Backend

Apache Kafka Partitions and Consumer Groups Explained

Learn how Apache Kafka partitions drive scaling and ordering: log vs queue, topics, offsets, message keys, the two consumer group rules, retention and compaction, and when Kafka is the right tool.

Sep 24, 202610 min read

Backend

Scaling WebSockets Across Pods with Redis Pub/Sub

Scaling WebSockets breaks once you run a second server. Learn how to fan out messages across pods with Redis Pub/Sub, RabbitMQ or Kafka, when sticky sessions matter, and how to track presence.

Sep 24, 202610 min read

Backend

Java Threads and Multithreading: Runnable to ExecutorService

Learn how a Java thread works: Thread vs Runnable, lambdas, thread states, race conditions, stopping threads safely with interrupt or a volatile flag, Timer vs scheduled executors, and ExecutorService.

Sep 24, 202610 min read

Backend

Java Socket Programming: Build a Client-Server Chat App

A step-by-step guide to Java socket programming: ports and TCP, ServerSocket and Socket, sending chat messages with object serialization, and a multi-client server with a thread per client.

Sep 24, 202610 min read

Showing 10-18 of 65 articles

Ready to build something great?

Tell us about your project — we'll help you get there.

Start a Project