Deep dives into the things that matter — from code to cognition.
📝 Study Prep →How the JVM works from source to execution — bytecode, JIT, GC, memory model, threading, I/O, native builds, and modern Java projects.
B-trees, WAL, MVCC, query optimization, indexing, ACID, replication, sharding, consensus — everything from storage engines to distributed systems.
From physical cables to HTTP/3 — TCP/IP, DNS resolution, TLS handshakes, routing, CDNs, load balancing, and what happens when you type a URL.
When to use what — Redis, Kafka, API gateways, service mesh, circuit breakers, caching strategies, monolith vs microservices, and practical decision frameworks.
Latency numbers, profiling, flame graphs, CPU caches, memory optimization, database tuning, caching strategies, scaling patterns — making software fast.
Test pyramid, TDD, mocking philosophy, contract testing, mutation testing, chaos engineering, CI/CD integration — from unit tests to production confidence.
Audio codecs, streaming protocol, microservices at scale, recommendation engine, Discover Weekly, collaborative filtering, the economics of streaming.
1D barcode encoding, QR code structure, Reed-Solomon error correction, masking, scanning pipeline, mobile payments, 2FA, and QR security threats.
Biology of ridge formation, optical vs capacitive vs ultrasonic sensors, matching algorithms, Touch ID, forensics, spoofing, and liveness detection.
Detection vs recognition, FaceNet, ArcFace, Face ID hardware, embeddings, forensics, surveillance, bias, and the ethics of facial recognition.
Evidence-based learning techniques backed by cognitive science — active recall, spaced repetition, Feynman technique, study systems, and meta-learning.
Neurons, synapses, neuroplasticity, dopamine, memory formation, attention, sleep, stress — neuroscience fundamentals for understanding yourself.
First principles, inversion, probabilistic thinking, cognitive biases, logical fallacies, systems thinking, and decision-making frameworks.
Design docs, code reviews, technical presentations, giving feedback, managing up, async communication — the skills that multiply everything else.
NVC, Radical Candor, Pyramid Principle, negotiation (BATNA), storytelling, small talk (FORD), Cialdini's influence, active listening — structured frameworks for every conversation.