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General Information
Compatibility
EDB Postgres Distributed 5 release notes
EDB Postgres Distributed 5.8.0 release notes
EDB Postgres Distributed 5.7.0 release notes
EDB Postgres Distributed 5.6.1 release notes
EDB Postgres Distributed 5.6.0 release notes
EDB Postgres Distributed 5.5.1 release notes
EDB Postgres Distributed 5.5.0 release notes
EDB Postgres Distributed 5.4.1 release notes
EDB Postgres Distributed 5.4.0 release notes
EDB Postgres Distributed 5.3.0 release notes
EDB Postgres Distributed 5.2.0 release notes
EDB Postgres Distributed 5.1.0 release notes
EDB Postgres Distributed 5.0.1 release notes
EDB Postgres Distributed 5.0.0 release notes
Known issues
Concepts
Terminology
PGD overview
PGD overview - architecture and performance
Architecture overview
PGD compared
Get Started
Introducing PGD quick starts
Deploying an EDB Postgres Distributed example cluster on Docker
Deploying an EDB Postgres Distributed example cluster on Linux hosts
Deploying an EDB Postgres Distributed example cluster on AWS
Deploying an EDB Postgres Distributed example cluster on Azure and Google cloud platforms
Connecting to your database
Exploring replication with PGD
Exploring failover handling with PGD
Exploring conflict handling with PGD
Next steps with PGD
Planning your PGD deployment
Choosing your architecture
Choosing a Postgres distribution
Choosing your deployment method
Other considerations
Limitations
Deploying and configuring EDB Postgres Distributed
Manual deployment and configuration of PGD
Deploying PGD manually
Deployment and management with TPA
Deploying PGD using TPA
Deploying and configuring PGD on Kubernetes
Deploying and configuring PGD on EDB Postgres AI Cloud Service
Using
Application use
Application behavior
DML and DDL replication and nonreplication
Nodes with differences
General rules for applications
Timing considerations and synchronous replication
Use of table access methods (TAMs) in PGD
Feature compatibility
Using extensions with PGD
DDL replication
DDL overview
DDL replication options
DDL locking details
Managing DDL with PGD replication
DDL command handling matrix
DDL and role manipulation statements
Workarounds for DDL restrictions
PGD functions that behave like DDL
Sequences
Administration
Node management
Groups and subgroups
Creating and joining PGD groups
Viewing PGD topology
Removing nodes and groups
Joining a heterogeneous cluster
Connection DSNs and SSL (TLS)
Replication slots created by PGD
Node restart and down node recovery
Maintenance commands through proxies
Creating PGD nodes
Postgres configuration
PGD Proxy
EDB Postgres Distributed Proxy overview
Installing PGD Proxy
PGD Proxy configuration
Administering PGD Proxy
Monitoring PGD Proxy
Read-only routing with PGD Proxy
Proxies, Raft, and Raft subgroups
Creating Raft subgroups using TPA
Working with Raft subgroups and PGD CLI
Migrating to Raft subgroups
Raft elections in depth
Backup and recovery
Security and roles
Roles
Role management
PGD predefined roles
Roles and replication
Access control
Monitoring
OpenTelemetry integration
Monitoring through SQL
Testing and tuning PGD clusters
Upgrading
Upgrading PGD clusters with TPA
Upgrading PGD clusters manually
Supported PGD upgrade paths
Compatibility changes
Application schema upgrades
In-place Postgres or Postgres and PGD major version upgrades
Performing a Postgres major version rolling upgrade on a PGD cluster
Tools
EDB Postgres Distributed Command Line Interface (PGD CLI)
Installing PGD CLI
Installing PGD CLI on Linux
Installing PGD CLI on macOS
Installing PGD CLI with TPA
Using PGD CLI
Configuring PGD CLI
Discovering connection strings
Command reference
pgd assess
pgd cluster
pgd commit-scope
pgd completion
pgd events
pgd group
pgd groups
pgd node
pgd nodes
pgd raft
pgd replication
PGD_Features
Node types and capabilities
An overview of PGD Node types
Witness nodes
Logical standby nodes
Subscriber-only nodes and groups
An overview of Subscriber-only nodes
Creating Subscriber-only groups and nodes
Joining nodes to a Subscriber-only group
Optimizing subscriber-only groups
Commit Scopes
Overview of durability options
Durability terminology
Commit scopes
Origin groups
Commit scope rules
Comparing durability options
Degrading commit scope rules
Commit Scope Kinds
Synchronous Commit
Group Commit
Commit At Most Once
Lag Control
Working with Commit Scopes
Administering
Legacy synchronous replication using PGD
Limitations
Internal timing of operations
Conflict Management
Conflicts
Overview
Types of Conflict
Conflict detection
Conflict resolution
Conflict logging
Data verification with LiveCompare
Column-level conflict detection
Overview
Enabling and disabling column-level conflict resolution
Timestamps in column-level conflict resolution
Conflict-free replicated data types
CRDTs Overview
Using CRDTs
Operation-based and state-based CRDTs
CRDT Disk-space requirements
CRDTs vs conflict handling/reporting
Resetting CRDT values
Implemented CRDTs
Parallel Apply
Replication sets
Stream triggers
PGD AutoPartition
Explicit two-phase commit (2PC)
Decoding worker
Transaction streaming
Timestamp-based snapshots
CDC Failover support
Reference
PGD reference
User visible catalogs and views
System functions
PGD settings
Node management
Node management interfaces
Routing functions
Commit scopes
Conflicts
Conflict functions
Replication set management
Replication set membership
DDL replication filtering
Testing and tuning commands
Global sequence management interfaces
Autopartition
Stream triggers reference
Stream triggers manipulation interfaces
Stream triggers row functions
Stream triggers row variables
Internal catalogs and views
Internal system functions
Column-level conflict functions
Data migration to EDB Postgres Distributed
EDB*Loader and PGD
PGD compatibility
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