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Rahul Suryawanshi

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  • Distributed Systems
    • Series Overview
    • Part 1 — Foundations
      • What Is a Distributed System?
      • System Models
      • Network Model
      • Failure Model
      • Time Model
    • Part 2 — Communication & Coordination
      • Reliability & Retries
      • Service Discovery
      • Distributed Locks
      • Coordination Services
    • Part 3 — Replication, Consistency & Consensus
      • Consistency Models
      • CAP Theorem
      • Paxos vs Raft
      • Quorums & Voting
    • Part 4 — Fault Tolerance & High Availability
      • Fault Tolerance vs High Availability
      • Failure Detection
      • Observability
    • Part 5 — Scalability & Performance
    • Eight Fallacies of Distributed Computing
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Logical Clocks

Logical Clocks and Time in Distributed Systems

April 9, 2026February 22, 2026 by Rahul Suryawanshi

Distributed systems have no global clock. Logical clocks help reason about ordering, causality, and concurrency without relying on physical time.

Categories Distributed Systems Tags Cloud Architecture, Distributed Systems, Event Ordering, Happens Before, Hybrid Logical Clocks, Lamport Clocks, Logical Clocks, System Design, Vector Clocks

From Constraints to Communication

April 9, 2026January 13, 2026 by Rahul Suryawanshi

Part 2 of our distributed systems series explores how communication and coordination are shaped by network, node, and time constraints. Learn key strategies for building reliable and scalable systems.

Categories Distributed Systems Tags Communication, Coordination, Distributed Locks, Distributed Systems, Eight Fallacies, Foundations, Logical Clocks, Reliability, Retries, Service Discovery

Time Model – Why Ordering Is Harder Than It Looks

April 9, 2026January 8, 2026 by Rahul Suryawanshi

In distributed systems, time is not shared. Ordering events requires reasoning about causality, not clocks.

Categories Distributed Systems Tags Causality, Distributed Systems, Event Ordering, Foundations, Happens Before, Logical Clocks, Reliability Engineering, System Design, Time Model, Vector Clocks
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