The latest articles on DEV Community by Tanay Karmarkar (@tanay_karmarkar_fe8eb6dcd). https://dev.to/tanay_karmarkar_fe8eb6dcd https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4079742%2Ff5958ac1-dbc9-4a86-b8af-35b3c35c150d.png https://dev.to/tanay_karmarkar_fe8eb6dcd en Tanay Karmarkar Sun, 16 Aug 2026 06:05:02 +0000 https://dev.to/tanay_karmarkar_fe8eb6dcd/sowth-is-state-machine-replication-1oek https://dev.to/tanay_karmarkar_fe8eb6dcd/sowth-is-state-machine-replication-1oek <p>Every replicated database, Kafka partition, and Raft cluster relies on one rule: if deterministic replicas start identical and apply identical commands in an identical order, they stay identical.<br> Violate the order by one message, and you’ve built two different databases.</p> <p>In my blog, I learnt and then broke down the mechanics of State Machine Replication (SMR). I cover:</p> <p>-&gt; The Deterministic Primitive<br> -&gt; The Replicated Log<br> -&gt; Exactly-Once Apply</p> <div class="crayons-card c-embed text-styles text-styles--secondary"> <div class="c-embed__content"> <div class="c-embed__body"> <h2 class="fs-xl lh-tight"> <a href="https://portfolio.tanaykarmarkar.com/blogs/distributed-systems-state-machine-replication" rel="noopener noreferrer" class="c-link"> WTH is State Machine Replication? — Tanay Karmarkar </a> </h2> <p class="truncate-at-3"> WTH is State Machine Replication? Deterministic replicas must apply identical commands in identical order. </p> <div class="color-secondary fs-s flex items-center"> portfolio.tanaykarmarkar.com </div> </div> </div> </div>