--- title: OpenBao Features - Transactional Storage | daily.dev description: OpenBao's engineering team details their transactional storage model, contrasting it with HashiCorp Vault's older batch-application mechanism which lacks true... canonical: https://daily.dev/posts/openbao-features---transactional-storage-5dl0c8c3h twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: OpenBao Features - Transactional Storage | daily.dev og:description: OpenBao's engineering team details their transactional storage model, contrasting it with HashiCorp Vault's older batch-application mechanism which lacks true... og:url: https://daily.dev/posts/openbao-features---transactional-storage-5dl0c8c3h og:image: https://api.daily.dev/og/posts/5DL0C8c3h.png og:image:alt: OpenBao Features - Transactional Storage 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. # OpenBao Features - Transactional Storage **[OpenBao](https://daily.dev/sources/openbao)** · 4 min read · 0 upvotes · 0 comments ## Summary OpenBao's engineering team details their transactional storage model, contrasting it with HashiCorp Vault's older batch-application mechanism which lacks true check-and-set semantics. The post walks through how Vault's storage interface could allow partial writes (e.g., during PKI issuer creation) leading to inconsistent snapshots and broken API compatibility. OpenBao replaced this with an interactive transaction model implemented in both Raft and PostgreSQL backends, allowing arbitrary interleaved storage operations with full consistency, at the cost of limiting which storage backends (like S3) can be supported. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Why can Vault's snapshot restores end up inconsistent after operations like PKI root CA generation? Vault's legacy batch storage mechanism does not implement true check-and-set semantics: GET operations are dispatched ahead of writes, LIST operations are ignored, and reads are not compared against pending writes. During multi-write flows like PKI root issuer creation, this can leave storage entries like config/issuers out of sync with config/issuer, breaking API compatibility with older Vault versions expecting a default issuer to be set. _Teams evaluating Vault alternatives can track secrets-management architecture changes like this on daily.dev._ ### How does OpenBao's transactional storage differ from Vault's batch transaction handler? OpenBao uses an interactive transaction model that lets callers perform arbitrary storage operations interleaved with non-storage calls while guaranteeing consistency across all of them, implemented in both the Raft and PostgreSQL storage backends. Vault's older physical.GenericTransactionHandler only supported a limited batch application mechanism without real check-and-set guarantees, exposed internally for Performance Replication rather than general plugin use. _Engineers comparing storage consistency guarantees across secrets managers can follow this kind of architecture breakdown on daily.dev._ ## Similar posts on daily.dev - [Announcing OpenBao v2.7\!](https://daily.dev/posts/announcing-openbao-v2-7--emwrpj82p) · OpenBao · 11 upvotes · 0 comments - [Running OpenBao on Kubernetes with a CloudNativePG PostgreSQL backend](https://daily.dev/posts/running-openbao-on-kubernetes-with-a-cloudnativepg-postgresql-backend-y9jzjlzm1) · CNCF · 1 upvotes · 0 comments - [Announcing OpenBao v2.6\! – Open Source Security Foundation](https://daily.dev/posts/announcing-openbao-v2-6-open-source-security-foundation-2a9rrvhey) · OpenSSF · 1 upvotes · 0 comments - [WAL \+ S3: Lakebase storage for the era of agents](https://daily.dev/posts/wal-s3-lakebase-storage-for-the-era-of-agents-4trqspanr) · Neon · 25 upvotes · 2 comments --- Tags: [#secrets-management](https://daily.dev/tags/secrets-management), [#pki](https://daily.dev/tags/pki) [View this post on daily.dev](https://daily.dev/posts/openbao-features---transactional-storage-5dl0c8c3h) ```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":"OpenBao Features - Transactional Storage","url":"https://daily.dev/posts/openbao-features---transactional-storage-5dl0c8c3h","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/openbao-features---transactional-storage-5dl0c8c3h"},"datePublished":"2026-08-23T12:21:45.283Z","dateModified":"2026-08-23T12:41:14.155Z","description":"OpenBao's engineering team details their transactional storage model, contrasting it with HashiCorp Vault's older batch-application mechanism which lacks true...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/789c088b01e45c3338fe0d40b1e0075b?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/789c088b01e45c3338fe0d40b1e0075b?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"OpenBao","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":"OpenBao","logo":"https://media.daily.dev/image/upload/s--a91pfYlL--/c_limit,w_256/f_auto,q_auto/v1787487459/logos/openbao?_a=BAMAMicg0","url":"https://daily.dev/sources/openbao"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/openbao-features---transactional-storage-5dl0c8c3h","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"secrets-management,pki","timeRequired":"PT4M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"OpenBao","item":"https://daily.dev/sources/openbao"},{"@type":"ListItem","position":3,"name":"OpenBao Features - Transactional Storage"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/openbao-features---transactional-storage-5dl0c8c3h#faq","mainEntity":[{"@type":"Question","name":"Why can Vault's snapshot restores end up inconsistent after operations like PKI root CA generation?","acceptedAnswer":{"@type":"Answer","text":"Vault's legacy batch storage mechanism does not implement true check-and-set semantics: GET operations are dispatched ahead of writes, LIST operations are ignored, and reads are not compared against pending writes. 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