PHP
Advanced
System Design: Design a Rate Limiter for APIs
Design a distributed rate limiter — token bucket vs sliding window, Redis-backed implementation, API middleware, and handling distributed deployments.
PHP
Advanced
System Design Interview: Design a Chat Application Like WhatsApp
Design a real-time chat system for 500 million users — WebSockets vs polling, Kafka message queue, Cassandra storage, presence service and push notifications.
Laravel Eloquent ORM: Relationships, Eager Loading and Query Builder
33 views
SQL Window Functions: ROW_NUMBER, RANK, DENSE_RANK, LAG, LEAD Explained
31 views
System Design Interview: Design a Chat Application Like WhatsApp
25 views
PHP File Handling: Read, Write, and Manage Files
21 views
Git Conflict Resolution
20 views
PHP Input Validation: Never Trust User Data
Jun 3, 2026
PHP Magic Methods: __construct, __get, __set, __toString and More
Jun 2, 2026
PHP Static Methods and Properties Explained
Jun 1, 2026
PHP Abstract Classes vs Interfaces: Know the Difference
May 31, 2026
PHP Arrow Functions and Closures Explained
May 30, 2026