What is Sysiq and how is it different from reading static blogs?

Sysiq is an interactive system design platform where you don't just read about distributed systems — you actively build and test them. Solve real-world engineering challenges using a live diagram canvas, guided architectural labs, and real-time napkin math estimation tools.

Is Sysiq suitable for preparing for FAANG system design interviews?

Yes. Sysiq is tailored specifically for mid-level, senior, and staff engineering interviews (L4–L7). The problem bank covers actual interview scenarios: URL shorteners, distributed rate limiters, key-value stores, video streaming architectures, and real-time chat systems.

Can I use Sysiq for free?

Yes. Foundational modules, introductory interview problems, the Napkin Math calculator, and the global engineering leaderboard are all free with no time limit.

Do I need prior distributed systems experience to get started?

Not at all. The curriculum starts with fundamental building blocks — DNS, reverse proxies, database replication, and caching — and progressively walks you up to complex architectures like Raft consensus, vector clocks, and LSM-tree compaction.

What is eventual consistency?

Eventual consistency guarantees that, given no new updates, all replicas will eventually converge to identical data state.

Back to GuidesDistributed Systems

The Complete Guide to Distributed Systems Architecture

CAP theorem, PACELC, consensus algorithms (Raft), leader election, and distributed transactions.

Launch Interactive Lab

Prerequisites & Foundational Topics

Networking BasicsDatabase Fundamentals

Core Architectural Concepts

1. Consensus Algorithms (Raft & Paxos)

Guarantees that a cluster of nodes agrees on state changes even in the presence of node crashes or network delays.

Raft breaks consensus into leader election, log replication, and safety. A leader accepts commands and replicates log entries to a majority quorum.

Interview Scenarios & Solutions

Top FAANG and tier-1 system design interview questions.

How do you implement distributed transactions across microservices without 2PC?

Use the Saga Pattern (Orchestration or Choreo-graphy) with compensating transactions to undo actions if a step fails downstream.

The Complete Guide to Distributed Systems Architecture

Prerequisites & Foundational Topics

Core Architectural Concepts

1. Consensus Algorithms (Raft & Paxos)

Interview Scenarios & Solutions

Frequently Asked Questions

Related Architectural Comparisons

CAP Theorem vs PACELC Theorem in Distributed Systems

CQRS vs Event Sourcing: Pattern Comparison

Monolithic Architecture vs Microservices

The Complete Guide to Distributed Systems Architecture

Prerequisites & Foundational Topics

Core Architectural Concepts

1. Consensus Algorithms (Raft & Paxos)

Interview Scenarios & Solutions

Frequently Asked Questions

Related Architectural Comparisons

CAP Theorem vs PACELC Theorem in Distributed Systems

CQRS vs Event Sourcing: Pattern Comparison

Monolithic Architecture vs Microservices