Zucol OpenLearning · now live: Modern Data Lakehouse

See how technology actually works.

Don't just read about systems. Take them apart, run them, break them and fix them. Every module is a hands-on experience built around one idea.

Explore the Lakehouse track Try a 5-minute sample

29: interactive modules
10: ways to learn
0: exams. Just understanding.

Open table formats · Delta Lake · Apache Iceberg · Apache Hudi

Spark reads only 2 of 16 files. Metadata skipped the rest.

Tracks

Pick a track. Go deep.

Data engineering

Modern Data Lakehouse

Open files, open tables, any engine.

From object storage and Parquet up through Delta Lake, Apache Iceberg and Apache Hudi, to catalogs, pipelines, query engines and real platforms on AWS, Google Cloud, Azure and open source. By the end you can reason about how a lakehouse behaves, and design one.

9 chapters · 29 modules · ~15 hours

29 modules

Open track

A taste of module 6: time travel on the Delta transaction log. Click any version.

_delta_log/▶ replaying

Files in storage · 3 in the table at version 0

added by this commit
in the table
removed by this commit
still in storage for time travel

Removed files are only unlinked from the log, not deleted. That is why VERSION AS OF works, and why VACUUM exists.

SELECT * FROM orders VERSION AS OF 0

How you'll learn

The format fits the idea.

A 3D model when structure matters. A simulation when trade-offs matter. A broken system when judgement matters. Short explanations sit right next to them.

3D models

Open up systems and look inside, layer by layer.

partitions153

files

query time

Live simulations

Change a parameter and watch the trade-offs move.

writerobject store

read _delta_log▶

write part-0007.parquet▶

put 00004.json if absent▶

✓ committed v4◀

Step-throughs

Play a process forward and back at your own pace.

Build & connect

Assemble pipelines and architectures that actually run.

producer

consumer group

table

all healthy

Fix the problem

Diagnose a broken system from the evidence.

countrysumIN1,460UK95

Sandboxes

Real SQL and code, running right in your browser.

Roadmap

55 tracks across 13 areas, built one at a time.

Data engineering5

● Modern Data Lakehouse
Streaming Data Systems
Spark
Data Modelling
Data Quality

AI & machine learning6

LLM Foundations
RAG Systems
AI Agents
Voice AI
LLM Evaluation
Applied ML

Platform & cloud4

Cloud Architecture
Kubernetes
CI/CD
Observability

Architecture4

System Design at Scale
API Design
Database Internals
Enterprise Patterns

Security & government3

Application Security
DPDP Act
Building for Government

Cross-cutting1

AI-Assisted Development

Software development7

Frontend
Backend
Mobile
Testing
Clean Code
Code Review
Git

Design5

UX Fundamentals
UI for Developers
Design Systems
Accessibility
Dashboards

Delivery management5

Agile & Scrum
Estimation
Fixed-Scope Projects
Risk
Delivery Metrics

Business analysis3

Requirements
Product Thinking
Process Mapping

Pre-sales & client skills4

RFP Response
Proposal Architecture
Demos
Client Communication

Domain knowledge4

Higher Education
Government Systems
Cooperative Banking
Health Insurance

Leadership4

Engineer to Tech Lead
Feedback
Effective Meetings
Technical Writing