--- title: A Guide to Logical Replication and CDC in PostgreSQL... description: A comprehensive guide to PostgreSQL replication covering the internal mechanisms that make it possible, including the Write-Ahead Log (WAL), logical decoding,... canonical: https://daily.dev/posts/a-guide-to-logical-replication-and-cdc-in-postgresql-with-airbyte-yyezaphdy twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: A Guide to Logical Replication and CDC in PostgreSQL with Airbyte | daily.dev og:description: A comprehensive guide to PostgreSQL replication covering the internal mechanisms that make it possible, including the Write-Ahead Log (WAL), logical decoding,... og:url: https://daily.dev/posts/a-guide-to-logical-replication-and-cdc-in-postgresql-with-airbyte-yyezaphdy og:image: https://api.daily.dev/og/posts/yyeZAPhdy.png og:image:alt: A Guide to Logical Replication and CDC in PostgreSQL with Airbyte 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. # A Guide to Logical Replication and CDC in PostgreSQL with Airbyte **[Neon](https://daily.dev/sources/neontech)** · 10 min read · 0 upvotes · 0 comments ## Summary A comprehensive guide to PostgreSQL replication covering the internal mechanisms that make it possible, including the Write-Ahead Log (WAL), logical decoding, and replication slots. Explains the differences between physical and logical replication, then walks through setting up master-replica logical replication between PostgreSQL servers. Also covers how to use Airbyte for CDC-based replication from PostgreSQL to external data stores like BigQuery, Snowflake, and Redshift, including a section on using Neon's serverless PostgreSQL with Airbyte Cloud. Concludes with key WAL configuration settings to optimize replication performance. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Consolidating databases with Postgres logical replication](https://daily.dev/posts/consolidating-databases-with-postgres-logical-replication-2uvwobhja) · Planet PostgreSQL · 0 upvotes · 0 comments - [Real-Time CDC From PostgreSQL to Snowflake, Step by Step](https://daily.dev/posts/real-time-cdc-from-postgresql-to-snowflake-step-by-step-oxsso8ssp) · Snowflake Community · 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 --- Tags: [#postgresql](https://daily.dev/tags/postgresql), [#change-data-capture](https://daily.dev/tags/change-data-capture) [View this post on daily.dev](https://daily.dev/posts/a-guide-to-logical-replication-and-cdc-in-postgresql-with-airbyte-yyezaphdy) ```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":"A Guide to Logical Replication and CDC in PostgreSQL with Airbyte","url":"https://daily.dev/posts/a-guide-to-logical-replication-and-cdc-in-postgresql-with-airbyte-yyezaphdy","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/a-guide-to-logical-replication-and-cdc-in-postgresql-with-airbyte-yyezaphdy"},"datePublished":"2026-07-09T06:57:34.293Z","dateModified":"2026-07-09T07:00:06.848Z","description":"A comprehensive guide to PostgreSQL replication covering the internal mechanisms that make it possible, including the Write-Ahead Log (WAL), logical decoding,...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/e563c643e8686538a4546c6c7b2cd4c1?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/e563c643e8686538a4546c6c7b2cd4c1?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Neon","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":"Neon","logo":"https://media.daily.dev/image/upload/s--65EDghou--/f_auto/v1724339118/logos/neontech","url":"https://daily.dev/sources/neontech"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/a-guide-to-logical-replication-and-cdc-in-postgresql-with-airbyte-yyezaphdy","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"postgresql,change-data-capture","timeRequired":"PT10M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Neon","item":"https://daily.dev/sources/neontech"},{"@type":"ListItem","position":3,"name":"A Guide to Logical Replication and CDC in PostgreSQL with Airbyte"}]} ```