Python Iterators, Generators, Context Managers and Dunder Methods Explained

Python File Handling, CSV, JSON, Exceptions and Decimal For Beginners

Python Modules, Packages, Imports and Virtual Environments Explained

Python For Absolute Beginners: How Programs, Values and Execution Work

Python Functions Explained: Arguments, Scope, Return Values and Recursion

Python Threads, Processes, asyncio and the GIL Explained

Python Lists, Tuples, Dictionaries and Sets Explained For Beginners

Python Closures, Decorators, functools and Type Hints Explained

Python Classes, Dataclasses, Inheritance and Composition For Beginners

Python If, For and While Loops Explained For Beginners

Python Testing, Logging, Profiling, argparse and Packaging For Beginners

Running Apache Spark in Production: Deploy, Monitor, Recover · Apache Spark

Spark Performance Tuning: Shuffles, Skew, Joins & AQE · Apache Spark

Spark Structured Streaming: Watermarks, State & Recovery · Apache Spark

Spark Query Plans: How to Read explain() Output · Apache Spark

PySpark Data Correctness: NULLs, Joins, Timestamps & UDFs · Apache Spark

PySpark RDDs vs DataFrames vs Spark SQL Explained · Apache Spark

Spark Architecture: Driver, Executors, Jobs, Stages & Tasks · Apache Spark

Why Apache Spark? Distributed Data Processing Explained · Apache Spark

Access Control and Integrated Reasoning · SQL

Transactions and Concurrency · SQL

Modifying and Synchronising Data · SQL

Query Performance and Indexing · SQL

Advanced Analytical Queries · SQL

Combining Tables and Queries · SQL

Retrieving and Summarising Data · SQL

Populating and Validating Data · SQL

Designing and Defining Database Structures · SQL

Database and SQL Foundations · SQL

Spark in Production · Apache Spark

Spark Structured Streaming · Apache Spark

Spark Performance Tuning · Apache Spark

Spark Internals · Apache Spark

Spark Data Engineering · Apache Spark

PySpark DataFrames · Apache Spark

System Design Expert Case Studies

System Design Reliability and Operations

System Design Architecture and Services

System Design Scaling Patterns

System Design Distributed Systems

System Design Data Storage

System Design Networking and APIs

System Design Foundations

Spark Architecture · Apache Spark

Spark Distributed Computing · Apache Spark

The JVM, build & testing · Java

Concurrency & virtual threads · Java

Capstone project · Java

Streams & Optional · Java

Exceptions, files & I/O · Java

Collections · Java

Functional Java · Java

Generics · Java

Objects & classes · Java

Modern types & data modelling · Java

Core syntax · Java

Setup & the runtime · Java

Batch, Streams and CDC · Data Systems

How Databases Store Data · Data Systems

How Consensus Works · Data Systems