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Abstract Algorithms

Systems Architecture & Design

Learn canonical systems architecture, distributed systems, and core algorithms from first principles.

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System Flow:Distributed CachingDesign a URL ShortenerDatabase Sharding & ReplicationDistributed Systems Curriculum

Curriculum Tracks

· Three connected ways to learn systems engineering.

Learn Concepts

Concepts

Core architecture, distributed systems, and algorithm foundations.

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Solve Problems

Problems

Real engineering scenarios with staged solutions and trade-offs.

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Discover Domains

Domains

Structured curriculum roadmaps across distributed systems, networking, and data.

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Popular Concepts

· Essential architectural and distributed systems building blocks.
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In-Memory Caching & Event Loop Architecture

Distributed Systems & Storage

Eliminate DB latency bottlenecks using single-threaded event loops, Epoll I/O multiplexing, and LRU/LFU memory eviction.

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Rate Limiting & Token Buckets

Security & Identity

Protect downstream APIs and services from Denial-of-Service spikes using Token Bucket and Sliding Window Log algorithms.

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Database Sharding & Range Partitioning

Distributed Systems & Storage

Horizontally partition massive database tables across multiple database instances using shard keys.

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Quorum Consistency & Raft Consensus

Distributed Systems & Storage

Guarantee strong consistency across distributed database nodes using Quorum math (R + W > N) and Raft leader election.

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From Our Channels

Video walkthroughs and engineering essays.

Abstract Algorithms YouTube2026-06-28

Why build a space shuttle when all you need is a bicycle? Meet the KISS principle!

Why do software engineers build complex distributed systems when simple patterns work best? In-depth breakdown of the Keep It Simple, Stupid principle in production architecture.

2 min watchOpen↗
Abstract Algorithms YouTube2026-06-29

How do systems check if usernames exist instantly without slow database calls? | Bloom Filters

Learn how high-throughput systems use probabilistic O(1) Bloom filters to shield databases from million-QPS lookup spikes.

2 min watchOpen↗
Abstract Algorithms YouTube2026-07-02

Standard chains break when agents need loops or coordination: LangGraph vs LangChain

Architectural comparison between cyclical stateful graphs and linear prompt pipelines for autonomous multi-agent production workflows.

3 min watchOpen↗
Abstract Algorithms YouTube2026-07-05

How do browsers and servers establish a secure connection in milliseconds? | SSL/TLS Handshake

Step-by-step walkthrough of TLS 1.3 key exchanges, session resumption tickets, and cryptographic zero-roundtrip connection handshakes.

2 min watchOpen↗