📌 Index

The Coder Cafe is composed of several sections:

• Concepts: Learn one concept with your coffee.

• The Coding Corner: A corner of the cafe where we build real-world systems together.

• Lattes & Stories: Personal reflections and stories.

• Announcements: The Coder Cafe news and updates.

All the posts in this index are grouped by category, then listed by publication date (newest to oldest).

🔔 Notifications for each section can be configured in your settings.

Concepts

Programming

Algorithms and Data Structures

• Ford-Fulkerson Explained

• Topological Sort Explained

• Graphs Explained

• Binary Heaps Explained

• Arrays vs. Linked Lists

Code Health

• Linus Torvalds vs. Ambiguous Abstractions

• Organic Growth vs. Controlled Growth

• What Makes Code Beautiful

• Tidy First Explained

• Nested Code Explained

• Coupling Explained

• Cohesion Explained

• How to Simplify If Statements

• Code Readability Explained

• Cognitive Load Explained

• Product Ideas Over Requirements

• YAGNI Explained

• Premature Abstractions Explained

Coding Challenges

• Gossip Glomers

• One Billion Row Challenge

• Exercism

• Advent of Code

Concurrency

• Data Race vs. Race Condition

• Mutex vs. Semaphore

• Coroutines Explained

• Concurrency vs. Parallelism

Functional Programming

• Functors, Applicatives, and Monads

• Partially Applied Functions vs. Currying

Testing

Fundamentals

• Property-Based Testing Explained

• Eventually Green Tests (April Fool’s Joke)

• Code Coverage Explained

• Avoiding Logic in Tests

• Line vs. Branch Coverage

Unit Tests

• Test-Driven Development (TDD) Explained

• Test Behavior, Not Implementation

• Unit Tests As Documentation

• 10 Unit Tests Properties

• Common Arguments Against Unit Tests

Distributed Systems

Caches

• Cache Use Cases Explained

Databases

• Google F1 Explained

• LSM Trees Explained

• CRDTs Explained

• Availability Models Explained

• Exploring Database Isolation Levels

• Consensus Explained

• Consistency Models Explained

• Isolation Level Explained

• Database Transactions Explained

• Safety and Liveness Explained

• The PACELC Theorem Explained

• The CAP Theorem Explained

• ACID Explained

Performance

• Latency and User Experience

Fundamentals

• Systems Thinking Explained

• Working on Complex Systems (Talk)

• Working on Complex Systems

System Design

• Star Citizen Server Meshing

• Bloom Filters Explained

• Probabilistic Increment Explained

Reliability

Analysis

• Lurking Variables Explained

• Post Hoc Ergo Propter Hoc

Cases

• Horror Coding Stories: Therac-25

Fundamentals

• Metastable Failures in Distributed Systems

• AI for Production

• Soft vs. Hard Dependency

• Fail Open vs. Fail Closed

• Resilient, Fault-tolerant, Robust, or Reliable?

• Adaptive LIFO Explained

• Graceful Degradation Explained

• Reliability Explained

Systems

Computer Architecture

• How an SSD Works

• Instruction Pipelining Explained

• Simultaneous Multithreading Explained

Linux

• How Linux 7.0 Broke PostgreSQL

• Linux Soft vs. Hard Lockup

Beyond the Code

Communication

• 3 Bullets and a Call to Action

• 10 Technical Writing Rules

• The XY Problem Explained

Cognitive Biases

• Survivor Bias Explained

• Streetlight Effect Explained

• Confirmation Bias Explained

• Cognitive Biases Explained

Critical Thinking

• The Wisdom of Crowds Explained

• Keeping a Mistake Journalw

• Lateral Thinking Explained

Knowledge Management

• Second Brain Explained

Mindset

• Don’t Be Ashamed to Say I Don’t Know

• Don’t Forget About Your Mental Health

Product Management

• The Cold Start Problem Explained

Teams

• The Wisdom of Crowds Explained

• The Shirky Principle Explained

• Nothing Beats Kindness

• Speed vs. Velocity

The Coding Corner

Build Your Own Key-Value Storage Engine

• Week 8: Concurrency

• Week 7: Bloom Filters and Trie Memtable

• Week 6: Block-Based SSTables and Indexing

• Week 5: Leveling and Key-Range Partitioning

• Week 4: Deletes, Tombstones, and Compaction

• Week 3: Durability with Write-Ahead Logging

• Week 2: LSM Tree Foundations

• Week 1: In-Memory Store

• Build Your Own Key-Value Storage Engine

Lattes & Stories

• Services in Space

• The Story of The Coder Cafe

• What I Learned During My Paternity Leave

• Why I Switched to Vim Keybindings

• So, I Wrote a Book

Announcements

• 🎉 1,000 Subscribers, 1 Coding Challenge!

• Stepping Back to Move Forward

• Welcome to The Coder Cafe!

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