Video Guides
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Visual walkthroughs of complex topics — watch, learn, and ace your next interview.
Subscribe21:34Spring Boot
Spring Boot Auto-Configuration Explained in 20 Minutes
Deep dive into @SpringBootApplication, conditional beans, and the spring.factories mechanism.
18K views
28:11Kafka
Kafka Consumer Groups & Rebalancing — What Actually Happens
Consumer group semantics, partition assignment strategies, and cooperative rebalancing.
24K views
35:02Java Core
Java Virtual Threads Deep Dive — Project Loom in Production
How virtual threads work under the hood, carrier thread pinning, and Spring Boot 3.2 integration.
31K views
42:18GenAI
RAG Pipeline with Spring AI — Build It from Scratch
Document ingestion, chunking, embedding, vector search, and LLM augmentation with Spring AI.
14K views
31:45System Design
Designing Idempotent Payment APIs — Redis + Spring Boot
Idempotency keys, atomic Redis operations, and retry-safe contracts for financial APIs.
19K views
38:09SQL
SQL Query Optimization — Execution Plans & Indexing
EXPLAIN ANALYZE, composite indexes, partial indexes, and partition pruning for large tables.
22K views