--- title: Real-Time CDC From PostgreSQL to Snowflake, Step by Step description: A step-by-step guide to building a real-time CDC pipeline from PostgreSQL to Snowflake using Estuary. Covers the three-stage architecture (capture via WAL... canonical: https://daily.dev/posts/real-time-cdc-from-postgresql-to-snowflake-step-by-step-oxsso8ssp twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Real-Time CDC From PostgreSQL to Snowflake, Step by Step | daily.dev og:description: A step-by-step guide to building a real-time CDC pipeline from PostgreSQL to Snowflake using Estuary. Covers the three-stage architecture (capture via WAL... og:url: https://daily.dev/posts/real-time-cdc-from-postgresql-to-snowflake-step-by-step-oxsso8ssp og:image: https://api.daily.dev/og/posts/oXsSo8SsP.png og:image:alt: Real-Time CDC From PostgreSQL to Snowflake, Step by Step 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. # Real-Time CDC From PostgreSQL to Snowflake, Step by Step **[Snowflake Community](https://daily.dev/sources/snowflake_comm)** · 13 min read · 0 upvotes · 0 comments ## Summary A step-by-step guide to building a real-time CDC pipeline from PostgreSQL to Snowflake using Estuary. Covers the three-stage architecture (capture via WAL logical replication, durable Estuary collections, Snowflake materialization with merge queries), Docker-based local setup with a traffic generator, Postgres replication prerequisites (wal_level, publication, watermarks table), Snowflake environment setup with key-pair auth, sync schedule tuning for latency vs. cost tradeoffs, schema evolution handling, and production considerations like replication slot lag monitoring and Snowpipe Streaming for high-frequency workloads. Achieves exactly-once delivery with inserts, updates, and deletes propagated in seconds. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [PostgreSQL CDC, Evolved: Read-Only Mode, IAM Auth & Partition Support Now in Estuary](https://daily.dev/posts/postgresql-cdc-evolved-read-only-mode-iam-auth-partition-support-now-in-estuary-id78iq6hb) · PostgreSQL · 0 upvotes · 0 comments - [How We Pushed CDC into Postgres](https://daily.dev/posts/how-we-pushed-cdc-into-postgres-gk0os0oyc) · Hacker News · 1 upvotes · 0 comments - [Designing Right-Time Data Ingestion Pipelines in Snowflake](https://daily.dev/posts/designing-right-time-data-ingestion-pipelines-in-snowflake-ivokahy9x) · Snowflake Community · 0 upvotes · 0 comments --- Tags: [#backend](https://daily.dev/tags/backend), [#postgresql](https://daily.dev/tags/postgresql), [#snowflake](https://daily.dev/tags/snowflake), [#change-data-capture](https://daily.dev/tags/change-data-capture) [View this post on daily.dev](https://daily.dev/posts/real-time-cdc-from-postgresql-to-snowflake-step-by-step-oxsso8ssp) ```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":"Real-Time CDC From PostgreSQL to Snowflake, Step by Step","url":"https://daily.dev/posts/real-time-cdc-from-postgresql-to-snowflake-step-by-step-oxsso8ssp","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/real-time-cdc-from-postgresql-to-snowflake-step-by-step-oxsso8ssp"},"datePublished":"2026-07-30T14:15:03.510Z","dateModified":"2026-07-30T14:33:37.561Z","description":"A step-by-step guide to building a real-time CDC pipeline from PostgreSQL to Snowflake using Estuary. 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