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System Design Guide

Foundations

Fundamentals What is System Design?How to solve?How to estimate?Capacity Planning

Scaling & Reliability

Scalability Availability Fail-Over Latency vs Throughput Replication

Theorems

CAP Theorem PACELC Theorem

Consistency

Consistency Strong Consistency Eventual Consistency Weak Consistency

Distributed Systems

Distributed Consensus Gossip Protocol Vector Clocks

Architecture Styles

Microservices Architecture Micro-frontends Architecture Monorepo vs Multi-repo

Building Blocks

Networking

DNS CDN Load Balancer Reverse Proxy

Caching

Cache-Aside Cache Strategies Write-Through Write-Behind

Data

Sharding Consistent Hashing Indexing Bloom Filters

Messaging

Message Queues Task Queues Pub/Sub

Coordination

Rate Limiting Distributed Locking Leader Election Heartbeat

Architecture & communication

Communication HTTP REST GraphQL gRPC WebSockets Server-Sent Events Webhooks

Patterns & components

Production concerns

Concepts Designs Interview Reels

System Design AI Engineering

Communication

Communication

Communication protocols and patterns in distributed systems.

1 min readConcepts · System Design

Communication in System Design

Understanding how services communicate is essential for designing distributed systems. Choose the right protocol based on your requirements for latency, throughput, and real-time needs.

HTTP

REST

gRPC

GraphQL

WebSockets

Server-Sent Events

Finished reading?

Mark it done to track your progress in Concepts.

Service Mesh

Understanding service mesh for microservices communication.

HTTP

HTTP — methods, status codes, headers, HTTP/1.1 vs HTTP/2 vs HTTP/3, keepalive, and what every system designer should know.

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