Setting the wal_level configuration parameter to logical. If you change an external PostgreSQL instance, you enable this feature by This setting is different from the setting used in In Cloud SQL, you enable this feature by setting the cloudsql.logical_decodingįlag to on. PostgreSQL supports logical decoding by writing additional information to its To minimize downtime, read this entire section before deciding Configure your PostgreSQL instance Note: Changing the flags discussed in this section requires a restart of Wal2json variants of JSON output - format-version 1 which encodes the whole transaction as a single JSON object and format-version 2 which outputs one JSON object per command. Cloud SQL supports the built-in pgoutput decoder, theĬontrib module, and wal2json. The format in which changes are streamed can be configured with differentĮxtension allows streaming all changes in a database to a consumer, formatted as Native logical replication, added in PostgreSQL 10. Pglogical extension, available in all PostgreSQL versions, and PostgreSQL's Logical replication in Cloud SQL is supported by the Logical replication is the flagship feature built on logical decoding.įeature, which requires both the source and destinationĭatabases to be the same version, logical replication enables replication across This independence from the storage layer provides great flexibility and enablesĪ wide array of functionality by consumers of the change streams. The decodedĬhanges are independent of the underlying physical storage format.Ĭhanges in data from a SQL level, in terms of INSERTs, UPDATEs, and DELETEs. Replicas are extracted from the WAL logs using logical decoding. When PostgreSQL performs logical replication, the changes that are streamed to
Important: Before using these features, see the Notes andįor general information about replication, see Theseįeatures enable logical replication workflows and change data capture (CDC) Save money with our transparent approach to pricingįeatures in Cloud SQL for PostgreSQL. Managed Service for Microsoft Active Directory Rapid Assessment & Migration Program (RAMP) Migrate from PaaS: Cloud Foundry, OpenshiftĬOVID-19 Solutions for the Healthcare Industry Use Ruby on Rails with Cloud SQL for PostgreSQL.
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