Scala

Scala

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Section 1: Getting Started

4Lessons ·
- 1: Setting Up Scala and sbt
  
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- 2: Scala on the JVM
  
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- 3: Scala 2 vs Scala 3 Differences
  
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- 4: Using the Scala REPL
  
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Section 2: Core Syntax

5Lessons ·
- 5: Values, Variables, and Types
  
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- 6: Control Flow as Expressions
  
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- 7: Functions and Methods
  
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- 8: String Interpolation
  
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- 9: Tuples in Scala
  
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Section 3: Object-Oriented Scala

6Lessons ·
- 10: Classes and Objects
  
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- 11: Traits
  
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- 12: Case Classes
  
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- 13: Companion Objects
  
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- 14: Sealed Traits and Enums (Scala 3)
  
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- 15: Abstract Classes vs Traits
  
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Section 4: Functional Scala

7Lessons ·
- 16: Pattern Matching
  
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- 17: Higher-Order Functions
  
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- 18: Immutability and Persistent Collections
  
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- 19: Option, Either, and Try
  
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- 20: For-Comprehensions
  
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- 21: Partial Functions
  
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- 22: Currying in Scala
  
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Section 5: Collections in Depth

4Lessons ·
- 23: List, Vector, and Array Operations
  
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- 24: Map and Set Operations
  
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- 25: Lazy Collections and Streams
  
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- 26: Building Custom Collections
  
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Section 6: Type System

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- 27: Implicits and Given Instances (Scala 3)
  
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- 28: Type Classes in Scala
  
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- 29: Variance Annotations
  
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- 30: Generics and Bounds
  
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- 31: Self Types and Structural Types
  
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Section 7: Concurrency and Ecosystem

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- 32: Futures and Promises
  
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- 33: Introduction to Akka Actors
  
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- 34: Building with sbt Multi-Module Projects
  
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- 35: Introduction to ZIO or Cats Effect
  
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- 36: Testing with ScalaTest
  
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Section 8: Practical Projects

4Lessons ·
- 37: Building a Command-Line Scala Application
  
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- 38: Building a Simple Actor-Based System
  
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- 39: Processing Data with Scala Collections
  
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- 40: Building a Small REST API with a Scala Framework
  
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Section 9: Interview Practice

2Lessons ·
- 41: Common Scala Interview Questions on Pattern Matching
  
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- 42: Comparing Scala's Functional Style to Java
  
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Section 10: Data Structures and Algorithms in Scala

4Lessons ·
- 43: Implementing a Linked List Functionally
  
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- 44: Implementing a Binary Search Tree
  
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- 45: Implementing Common Sorting Algorithms
  
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- 46: Big-O Notation with Scala Examples
  
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Section 11: More Practice Exercises

3Lessons ·
- 47: Practice Exercise: Building a Simple Expression Evaluator with Pattern Matching
  
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- 48: Practice Exercise: Building a Type-Safe Configuration Loader
  
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- 49: Practice Exercise: Processing a Dataset with For-Comprehensions
  
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Section 12: Advanced Functional Patterns

4Lessons ·
- 50: Monads Explained with Scala Examples
  
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- 51: Building a Simple Monad
  
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- 52: Tagless Final Pattern Overview
  
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- 53: Effect Systems: An Introduction
  
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Section 13: More Ecosystem

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- 54: An Overview of the Play Framework
  
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- 55: An Overview of Apache Spark with Scala
  
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- 56: Scala.js for Frontend Development
  
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Section 14: Scala Collections Library Deep Dive

5Lessons ·
- 57: The Collections Hierarchy: Iterable, Seq, Set, Map
  
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- 58: Mutable vs Immutable Collections In Depth
  
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- 59: ArrayBuffer and ListBuffer
  
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- 60: View and Lazy Collections
  
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- 61: Parallel Collections
  
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Section 15: Scala Standard Library Deep Dive

4Lessons ·
- 62: scala.util.Try, Success, Failure
  
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- 63: scala.concurrent.Future In Depth
  
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- 64: scala.io.Source for File Reading
  
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- 65: Ordering and Ordered Traits
  
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Section 16: Akka Ecosystem Deep Dive

6Lessons ·
- 66: Akka Actor Lifecycle
  
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- 67: Akka Supervision Strategies
  
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- 68: Akka Persistence for Event Sourcing
  
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- 69: Akka Streams In Depth
  
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- 70: Akka HTTP for Building APIs
  
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- 71: Akka Cluster Basics
  
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Section 17: Cats and Cats Effect Deep Dive

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- 72: Cats Type Classes: Functor, Applicative, Monad
  
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- 73: Cats Effect IO Monad
  
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- 74: Resource Management with Cats Effect
  
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- 75: Fibers and Concurrency in Cats Effect
  
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Section 18: Play Framework Deep Dive

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- 76: Play Framework Routing
  
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- 77: Play Controllers and Actions
  
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- 78: Play JSON Library
  
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- 79: Play with Slick for Database Access
  
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Section 19: Apache Spark with Scala Deep Dive

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- 80: Spark RDDs and Transformations
  
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- 81: Spark DataFrames and Datasets
  
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- 82: Spark SQL from Scala
  
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- 83: Spark Streaming Basics
  
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Section 20: Scala Build Tools Deep Dive

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- 84: sbt Build Definition In Depth
  
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- 85: sbt Plugins and Custom Tasks
  
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- 86: Cross-Building for Multiple Scala Versions
  
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- 87: Mill as an sbt Alternative
  
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Section 21: Scala 3 Specific Features

2Lessons ·
- 88: New Syntax: Significant Indentation
  
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- 89: Extension Methods in Scala 3
  
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90: Union and Intersection Types

3Lessons ·
- 91: Opaque Types
  
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- 92: Enums in Scala 3 In Depth
  
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- 93: Given/Using Clauses In Depth
  
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Section 22: Scala Testing Deep Dive

4Lessons ·
- 94: Property-Based Testing with ScalaCheck
  
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- 95: Mocking with ScalaMock
  
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- 96: Testing Akka Actors
  
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- 97: Integration Testing with Testcontainers
  
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Section 23: Functional Domain Modeling

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- 98: Modeling Domains with Algebraic Data Types
  
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- 99: Smart Constructors for Validation
  
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- 100: The Free Monad Pattern
  
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- 101: Tagless Final Pattern Revisited In Depth
  
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Section 24: More Data Structures and Algorithms in Scala

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- 102: Implementing a Linked List Functionally Revisited
  
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- 103: Implementing a Binary Search Tree Immutably
  
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- 104: Implementing a Persistent Stack
  
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- 105: Amortized Complexity of Persistent Data Structures
  
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Section 25: Scala for Data Engineering

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- 106: Building ETL Pipelines with Spark and Scala
  
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- 107: Working with Kafka from Scala
  
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- 108: Schema Evolution with Avro in Scala
  
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Section 26: More Practical Projects

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- 109: Building a REST API with Akka HTTP and Cats Effect
  
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- 110: Building a Real-Time Data Pipeline with Spark Streaming
  
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- 111: Building a Simple Actor-Based Chat Server
  
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- 112: Building a Functional Domain Model for an E-Commerce System
  
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Section 27: More Interview and Review

5Lessons ·
- 113: Common Scala Interview Questions on Implicits
  
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- 114: Common Scala Interview Questions on Variance
  
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- 115: Whiteboard Practice: Implementing a Binary Tree Traversal Functionally
  
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- 116: Code Review Checklist for Idiomatic Scala
  
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- 117: Interview Practice: System Design Basics for Scala Backend Roles
  
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Section 28: ZIO Ecosystem Deep Dive

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- 118: ZIO Effect System Basics
  
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- 119: ZIO Layers for Dependency Injection
  
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- 120: ZIO Fibers and Concurrency
  
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- 121: ZIO Streams
  
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- 122: Error Handling in ZIO
  
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Section 29: Scala for Machine Learning

3Lessons ·
- 123: Overview of Scala ML Libraries
  
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- 124: Using Spark MLlib from Scala
  
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- 125: Feature Engineering in Spark
  
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Section 30: Scala Microservices Architecture

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- 126: Building Microservices with Akka and Play
  
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- 127: Service Discovery Patterns in Scala
  
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- 128: Circuit Breakers with Akka
  
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- 129: Distributed Tracing in Scala Services
  
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Section 31: Scala Type System Deep Dive

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- 130: Higher-Kinded Types
  
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- 131: Path-Dependent Types
  
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- 132: F-Bounded Polymorphism
  
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- 133: Existential Types in Scala 2
  
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- 134: Match Types in Scala 3
  
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Section 32: More Practice and Drills

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- 135: Practice Exercise: Building a Type-Safe HTTP Client Wrapper
  
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- 136: Practice Exercise: Building a Validated Form Parser with Cats
  
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- 137: Practice Exercise: Building a Simple Interpreter with Pattern Matching
  
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- 138: Practice Exercise: Implementing a Persistent Queue
  
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Section 33: Scala Performance Deep Dive

4Lessons ·
- 139: JVM Tuning for Scala Applications
  
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- 140: Avoiding Boxing in Scala Collections
  
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- 141: Tail Call Optimization in Scala
  
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- 142: Benchmarking with JMH
  
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Section 34: Scala Ecosystem Tooling

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- 143: Scalafmt for Code Formatting
  
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- 144: Scalafix for Automated Refactoring
  
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- 145: Metals Language Server
  
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- 146: Bloop for Fast Compilation
  
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Section 35: Scala for Reactive Systems

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- 147: The Reactive Manifesto Principles
  
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- 148: Backpressure Handling in Reactive Streams
  
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- 149: Building Resilient Systems with Akka Supervision
  
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Section 36: More Real-World Case Studies

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- 150: Migrating a Java Codebase to Scala
  
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- 151: Interoperability Between Scala and Java Libraries
  
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- 152: Common Scala Anti-Patterns to Avoid
  
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Section 37: Scala for Financial Systems

3Lessons ·
- 153: Modeling Financial Instruments with ADTs
  
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- 154: Precision Arithmetic for Financial Calculations
  
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- 155: Event Sourcing for Audit Trails in Scala
  
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Section 38: Scala GraphQL and gRPC

3Lessons ·
- 156: Building a GraphQL Server with Caliban
  
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- 157: Building gRPC Services with ScalaPB
  
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- 158: Protocol Buffer Code Generation in sbt
  
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Section 39: More Final Projects

4Lessons ·
- 159: Building an Order Processing System with Akka Persistence
  
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- 160: Building a Real-Time Analytics Dashboard Backend
  
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- 161: Building a Distributed Rate Limiter
  
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- 162: Building a Simple Blockchain Simulator in Scala
  
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Section 40: More Interview and Final Review

5Lessons ·
- 163: Common Scala Interview Questions on Pattern Matching Revisited
  
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- 164: Common Scala Interview Questions on Akka vs ZIO
  
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- 165: Common Scala Interview Questions on Collection Performance
  
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- 166: Mock Coding Interview Walkthrough in Scala
  
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- 167: Timed Mock Assessment on Core Scala
  
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Section 41: Scala for Streaming Data

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- 168: Kafka Streams DSL in Scala
  
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- 169: Flink with Scala for Stream Processing
  
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- 170: Windowing and Aggregation in Stream Processing
  
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Section 42: Scala Security Practices

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- 171: Secure Coding Practices in Scala
  
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- 172: Handling Secrets in Scala Applications
  
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- 173: JWT Authentication in Play/Akka HTTP
  
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Section 43: More Language Deep Dive

4Lessons ·
- 174: Structural Types in Scala
  
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- 175: Context Functions in Scala 3
  
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- 176: Multiversal Equality in Scala 3
  
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- 177: Export Clauses in Scala 3
  
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Section 44: Scala Command-Line Tools

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- 178: Building CLIs with Scala and decline
  
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- 179: Scala Scripting with Scala-CLI
  
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- 180: Native Image Compilation with GraalVM
  
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Section 45: Scala Documentation and Style

3Lessons ·
- 181: Scaladoc Best Practices
  
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- 182: The Scala Style Guide Highlights
  
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- 183: Writing Effective README Documentation for Scala Libraries
  
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Section 46: Scala Dependency Management

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- 184: Managing Dependencies in sbt
  
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- 185: Resolving Dependency Conflicts
  
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- 186: Publishing Libraries to Maven Central
  
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Section 47: More Practical Backend Patterns

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- 187: Building a Health Check and Readiness Endpoint
  
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- 188: Rate Limiting Middleware in Akka HTTP
  
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- 189: Request Validation Middleware
  
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- 190: API Gateway Pattern in Scala Microservices
  
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Section 48: Scala for Event-Driven Architecture

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- 191: Event Sourcing Patterns with Akka Persistence Revisited
  
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- 192: CQRS Pattern Implementation in Scala
  
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- 193: Saga Pattern for Distributed Transactions
  
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Section 49: More Practice Drills Round 2

4Lessons ·
- 194: Practice Exercise: Building a Simple Task Scheduler with ZIO
  
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- 195: Practice Exercise: Building a Caching Layer with Cats Effect
  
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- 196: Practice Exercise: Implementing a Circuit Breaker from Scratch
  
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- 197: Practice Exercise: Building a Retry Mechanism with Exponential Backoff
  
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Section 50: Scala Compiler Deep Dive

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- 198: How the Scala Compiler Type-Checks Code
  
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- 199: Implicit Resolution Rules In Depth
  
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- 200: Macro Annotations Overview
  
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- 201: Compiler Plugins in Scala
  
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Section 51: Scala for Web Frontends

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- 202: Interfacing Scala.js with JavaScript Libraries
  
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- 203: Building UIs with Laminar
  
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- 204: Sharing Code Between Backend and Frontend with Scala.js
  
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- 205: Full-Stack Type Safety with Scala.js and Tapir
  
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Section 52: More Data Engineering Practice

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- 206: Data Validation Pipelines with Scala
  
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- 207: Building a Batch ETL Job with Spark
  
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- 208: Schema Registry Integration with Kafka
  
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- 209: Data Quality Monitoring in ETL Pipelines
  
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Section 53: Scala Observability

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- 210: Structured Logging in Scala Applications
  
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- 211: Metrics Collection with Kamon
  
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- 212: Distributed Tracing with OpenTelemetry in Scala
  
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- 213: Alerting Strategies for Scala Production Services
  
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Section 54: More Advanced Practice Projects

5Lessons ·
- 214: Building a Multi-Tenant SaaS Backend in Scala
  
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- 215: Building a Payment Processing Service with Cats Effect
  
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- 216: Building a Notification Service with Akka Actors
  
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- 217: Building a Real-Time Bidding System
  
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- 218: Building a Fraud Detection Pipeline with Spark
  
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Section 55: Scala for Legacy Java Integration

4Lessons ·
- 219: Wrapping Java Libraries for Idiomatic Scala Use
  
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- 220: Handling Java Nulls Safely in Scala
  
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- 221: Converting Java Collections to Scala Collections
  
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- 222: Incremental Migration Strategies from Java to Scala
  
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Section 56: More Testing Practice

5Lessons ·
- 223: Contract Testing Between Scala Microservices
  
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- 224: Load Testing Scala APIs with Gatling
  
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- 225: Testing ZIO Effects
  
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- 226: Snapshot Testing for Scala Data Structures
  
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- 227: Chaos Testing Concepts for Scala Services
  
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Section 57: Final Mastery Review

6Lessons ·
- 228: Practice Exercise: Building a Complete Order Management System End to End
  
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- 229: Practice Exercise: Building a Type-Safe Feature Flag System
  
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- 230: Practice Exercise: Building a Simple Distributed Cache
  
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- 231: Code Review Checklist for Production Scala Services
  
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- 232: Interview Practice: Whiteboard Session on Functional Design
  
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- 233: Timed Full Mock Assessment: End-to-End Scala Project Review
  
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Section 58: Scala History and Ecosystem Context

5Lessons ·
- 234: Scala's Design Philosophy and History
  
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- 235: Scala 2 vs Scala 3 Migration Considerations
  
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- 236: The Scala Community and Where to Learn More
  
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- 237: Comparing Scala to Kotlin for JVM Development
  
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- 238: Notable Companies and Systems Built with Scala
  
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Section 59: More Concurrency Patterns

4Lessons ·
- 239: Software Transactional Memory Concepts
  
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- 240: Actor Model vs CSP Model Comparison
  
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- 241: Lock-Free Programming Concepts in Scala
  
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- 242: Comparing Green Threads to JVM Threads in Scala
  
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Section 60: Scala for Configuration Management

4Lessons ·
- 243: Typesafe Config Library In Depth
  
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- 244: Environment-Specific Configuration Patterns
  
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- 245: Secrets Management in Scala Applications
  
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- 246: Feature Toggling with Typesafe Config
  
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Section 61: More Domain Modeling Practice

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- 247: Practice Exercise: Modeling a Booking System with ADTs
  
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- 248: Practice Exercise: Modeling an Inventory System with Refined Types
  
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- 249: Value Classes for Type-Safe Primitives
  
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- 250: Practice Exercise: Modeling a Multi-Currency Wallet System
  
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