--- title: Migrate from PostgreSQL to Spanner with minimal downtime description: Migrating from PostgreSQL to Spanner can bring benefits like horizontal scalability, strong consistency, and 99.999% availability. This post provides a... canonical: https://daily.dev/posts/migrate-from-postgresql-to-spanner-with-minimal-downtime-uikj979c7 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Migrate from PostgreSQL to Spanner with minimal downtime | daily.dev og:description: Migrating from PostgreSQL to Spanner can bring benefits like horizontal scalability, strong consistency, and 99.999% availability. This post provides a... og:url: https://daily.dev/posts/migrate-from-postgresql-to-spanner-with-minimal-downtime-uikj979c7 og:image: https://api.daily.dev/og/posts/UikJ979c7.png og:image:alt: Migrate from PostgreSQL to Spanner with minimal downtime 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. # Migrate from PostgreSQL to Spanner with minimal downtime **[Google Cloud](https://daily.dev/sources/gcp)** · 1 min read · 2 upvotes · 0 comments ## Summary Migrating from PostgreSQL to Spanner can bring benefits like horizontal scalability, strong consistency, and 99.999% availability. This post provides a step-by-step guide for performing a minimal downtime migration using the Spanner Migration Tool (SMT). ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#cloud](https://daily.dev/tags/cloud), [#backend](https://daily.dev/tags/backend), [#postgresql](https://daily.dev/tags/postgresql), [#spanner](https://daily.dev/tags/spanner) [View this post on daily.dev](https://daily.dev/posts/migrate-from-postgresql-to-spanner-with-minimal-downtime-uikj979c7) ```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":"Migrate from PostgreSQL to Spanner with minimal downtime","url":"https://daily.dev/posts/migrate-from-postgresql-to-spanner-with-minimal-downtime-uikj979c7","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/migrate-from-postgresql-to-spanner-with-minimal-downtime-uikj979c7"},"datePublished":"2024-02-23T17:06:19.330Z","dateModified":"2024-05-09T07:55:57.971Z","description":"Migrating from PostgreSQL to Spanner can bring benefits like horizontal scalability, strong consistency, and 99.999% availability. This post provides a...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/f8a83a480da3148e1e0a8cbc94594081?_a=AQAEufR","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/f8a83a480da3148e1e0a8cbc94594081?_a=AQAEufR","isAccessibleForFree":true,"articleSection":"Google Cloud","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":"Google Cloud","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/gcp","url":"https://daily.dev/sources/gcp"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/migrate-from-postgresql-to-spanner-with-minimal-downtime-uikj979c7","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":2},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"cloud,backend,postgresql,spanner","timeRequired":"PT1M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Google Cloud","item":"https://daily.dev/sources/gcp"},{"@type":"ListItem","position":3,"name":"Migrate from PostgreSQL to Spanner with minimal downtime"}]} ```