CDC Pipeline Implementation with Python & Debezium
Change Data Capture pipelines built on PostgreSQL logical replication and Debezium fail in production for structural reasons, not exotic ones: a disconnected consumer pins restartlsn and...
Production-grade PostgreSQL Logical Replication & CDC
A reference for database engineers, data platform teams, Python ETL developers, and DevOps practitioners running real-time data synchronization on PostgreSQL 15, 16, and 17. Learn how logical decoding, replication slots, and publications fit together — and how to operate them safely at scale.
Go from the architecture of the write-ahead log through slot lifecycle management, publication and subscription design, and Python & Debezium change data capture pipelines — with monitoring, conflict resolution, schema sync, and failover automation throughout.
Explore the reference
Four connected areas take you from first principles to a running, observable CDC pipeline — and the topology, failover, and schema-change discipline that keeps it running in production. Each links to focused guides and step-by-step procedures.
Logical Replication Setup & Management
Running PostgreSQL logical replication in production is less about the initial CREATE PUBLICATION statement and more about governing the Write-Ahead Log (WAL) lifecycle, replication slot...
PostgreSQL Logical Replication Architecture & Fundamentals
PostgreSQL logical replication operates at the row and transaction level, decoding committed changes from the Write-Ahead Log and replaying them as logical INSERT, UPDATE, and DELETE...
Replication Topologies & Failover Operations
Running logical replication across more than one node turns a stream you configured once into a system you have to operate, and the sharpest edge is that a PostgreSQL logical replication...
Start here
New to logical replication? These are the load-bearing guides — read them in order, or jump to the one that matches the problem in front of you.
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WAL Stream Mechanics
The Write-Ahead Log stream is the transport layer that every logical change-data-capture pipeline rides on, and this guide — part of PostgreSQL...
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Initializing Replication Slots
A logical replication slot is the durable Write-Ahead Log (WAL) cursor that makes Change Data Capture (CDC) survivable, and provisioning it correctly...
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Creating Publications
A publication is the declarative exposure boundary of a PostgreSQL logical replication topology, and defining it correctly is the first operational...
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Debezium Connector Configuration
The Debezium PostgreSQL connector is the extraction stage of a CDC pipeline: it owns a replication slot, decodes the WAL into change events, and...
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Replication Topologies & Failover Operations
Running logical replication across more than one node turns a stream you configured once into a system you have to operate, and the sharpest edge is...
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Monitoring & Alerting
Wiring an off-the-shelf Prometheus, Grafana, and Alertmanager stack to logical-replication state turns silent WAL retention into a paged incident, and...
What this site covers
Every page is a self-contained, search-friendly technical guide with copy-ready code, responsive tables, and cross-links to related material. The content is organized so you can read top-down or jump straight to the procedure you need — fully usable offline as an installable app.