--- title: Quick preview of KurrentDB v26.2 | daily.dev description: KurrentDB 26.2 moves its cluster coordination from Paxos to Raft, the consensus algorithm also used by Kafka and Kubernetes, aiming for more predictable... canonical: https://daily.dev/posts/quick-preview-of-kurrentdb-v26-2-il7mfj5qb twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Quick preview of KurrentDB v26.2 | daily.dev og:description: KurrentDB 26.2 moves its cluster coordination from Paxos to Raft, the consensus algorithm also used by Kafka and Kubernetes, aiming for more predictable... og:url: https://daily.dev/posts/quick-preview-of-kurrentdb-v26-2-il7mfj5qb og:image: https://api.daily.dev/og/posts/Il7MFJ5qB.png og:image:alt: Quick preview of KurrentDB v26.2 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Quick preview of KurrentDB v26.2 **[Event Store](https://daily.dev/sources/eventstore)** · 2 min read · 1 upvotes · 0 comments ## Summary KurrentDB 26.2 moves its cluster coordination from Paxos to Raft, the consensus algorithm also used by Kafka and Kubernetes, aiming for more predictable leadership and failover and laying groundwork for future multi-database clusters and configurable write acknowledgments. Licensing is also changing: multi-node clustering becomes a licensed feature starting in 26.2, but in exchange almost all other previously licensed features become free (versions 26.1 and earlier are unaffected). Other additions include multi-field indexes for filtering events on several attributes at once via the $all API, and a new --disable-tls flag that allows authentication without TLS for development or internal-network use, though credentials travel in cleartext with TLS off. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Does KurrentDB v26.2 require a license for multi-node clustering? Yes, starting with v26.2, multi-node clustering requires a license, while almost all previously licensed features become free. Versions v26.1 and earlier are unaffected and remain licensed exactly as before, staying supported for their full LTS term. Kurrent Cloud customers are not impacted by this change. _Track licensing shifts like KurrentDB's before they force an unplanned upgrade decision, via daily.dev._ ### What consensus algorithm does KurrentDB use for clustering in version 26.2? KurrentDB moves its cluster coordination from the classic Paxos algorithm to Raft in version 26.2, the same consensus protocol used by systems like Apache Kafka and Kubernetes. The switch aims to make leader election and failover more resilient and predictable, and sets up future features like multiple databases per cluster and configurable write acknowledgment counts. _Compare consensus algorithm choices like Raft versus Paxos with daily.dev when picking a database backend._ ### How do I run KurrentDB without TLS but still require authentication? Use the new --disable-tls flag introduced in KurrentDB v26.2, which disables TLS while keeping authentication enforced, unlike the older --insecure flag that turned off both. This is meant for development or trusted internal-network setups only, since credentials travel in cleartext once TLS is off, so it should not be used on the public internet. _Get configuration flags like this right the first time by following database releases on daily.dev._ ## Similar posts on daily.dev - [Licensing in KurrentDB v26.2 and beyond: what's free and what's licensed](https://daily.dev/posts/licensing-in-kurrentdb-v26-2-and-beyond-what-s-free-and-what-s-licensed-s0vcosgag) · Event Store · 0 upvotes · 0 comments - [For years, Apache Cassandra handed this work to your team — 6.0 takes it back](https://daily.dev/posts/for-years-apache-cassandra-handed-this-work-to-your-team-6-0-takes-it-back-gbkadaqjj) · The New Stack · 0 upvotes · 0 comments - [If You Think ScyllaDB Is Just Cassandra in C\+\+, Look Again](https://daily.dev/posts/if-you-think-scylladb-is-just-cassandra-in-c-look-again-ovlmgowot) · SoftwareMill · 1 upvotes · 0 comments - [Confluent Cloud Q1 2026: Queues for Kafka, KCP for migration](https://daily.dev/posts/confluent-cloud-q1-2026-queues-for-kafka-kcp-for-migration-hqqzwvq3q) · Confluent Blog · 1 upvotes · 0 comments --- Tags: [#backend](https://daily.dev/tags/backend), [#licensing](https://daily.dev/tags/licensing) [View this post on daily.dev](https://daily.dev/posts/quick-preview-of-kurrentdb-v26-2-il7mfj5qb) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Quick preview of KurrentDB v26.2","url":"https://daily.dev/posts/quick-preview-of-kurrentdb-v26-2-il7mfj5qb","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/quick-preview-of-kurrentdb-v26-2-il7mfj5qb"},"datePublished":"2026-08-20T08:28:44.586Z","dateModified":"2026-09-13T19:20:27.421Z","description":"KurrentDB 26.2 moves its cluster coordination from Paxos to Raft, the consensus algorithm also used by Kafka and Kubernetes, aiming for more predictable...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/f342df24c19bddad288c7763255d0f4c?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/f342df24c19bddad288c7763255d0f4c?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Event Store","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Event Store","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/6e7940e0a29e4b3cbfef11831ec252c2","url":"https://daily.dev/sources/eventstore"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/quick-preview-of-kurrentdb-v26-2-il7mfj5qb","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"backend,licensing","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Event Store","item":"https://daily.dev/sources/eventstore"},{"@type":"ListItem","position":3,"name":"Quick preview of KurrentDB v26.2"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/quick-preview-of-kurrentdb-v26-2-il7mfj5qb#faq","mainEntity":[{"@type":"Question","name":"Does KurrentDB v26.2 require a license for multi-node clustering?","acceptedAnswer":{"@type":"Answer","text":"Yes, starting with v26.2, multi-node clustering requires a license, while almost all previously licensed features become free. 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