PostgreSQL Logical Replication Load-Balancing Example #32
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Pull request overview
This PR adds a comprehensive example demonstrating PostgreSQL logical replication with load-balancing capabilities using Docker containers and a microservice-based ESB (Enterprise Service Bus) orchestrator.
Changes:
- Adds Docker-based multi-master logical replication setup with configurable network topology
- Implements JSON-RPC server infrastructure for managing database nodes
- Provides orchestration scripts for automated container deployment and configuration
Reviewed changes
Copilot reviewed 15 out of 15 changed files in this pull request and generated 19 comments.
Show a summary per file
| File | Description |
|---|---|
| example/01-logical-replication/sysconfig.json | System configuration defining network topology, roles, and scaling parameters |
| example/01-logical-replication/svc_call_metadata.py | Service call metadata definitions for network topology updates and database initialization |
| example/01-logical-replication/orchestrator.py | Main orchestration script that creates Docker containers and initializes the database cluster |
| example/01-logical-replication/run-container.sh | Shell script for launching individual database node containers |
| example/01-logical-replication/docker-network.sh | Script to create Docker network with custom subnet configuration |
| example/01-logical-replication/docker-build.sh | Script to build the database node Docker image |
| example/01-logical-replication/docker-daemon/daemon.json | Docker daemon configuration disabling iptables |
| example/01-logical-replication/db-node.dockerfile | Dockerfile defining the PostgreSQL database node with JSON-RPC server |
| example/01-logical-replication/db-node-rpc/start-server.sh | Script to start the JSON-RPC server in containers |
| example/01-logical-replication/db-node-rpc/service_properties.py | Service property definitions for ESB validation |
| example/01-logical-replication/db-node-rpc/service_implementation.py | ESB service handler implementations for database and network operations |
| example/01-logical-replication/db-node-rpc/json-rpc-server.py | JSON-RPC server implementation for handling remote procedure calls |
| example/01-logical-replication/db-node-rpc/esbconfig.py | ESB configuration for importing service classes |
| example/01-logical-replication/db-node-rpc/class_reference.py | Class hierarchy definitions for service routing |
| example/01-logical-replication/db-node-rpc/class_mapping.py | Mapping definitions between service names and implementation classes |
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| network = sysconfig['system']['networks'][0] | ||
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| network_id = network['id'] |
There was a problem hiding this comment.
The variable 'network_id' is assigned on this line but never used in the code. Consider removing it if it's not needed, or use it where intended.
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Pull Request
Description
Add an example which demonstrates a) load balancing and b) write balancing. The example is using multiple docker container and a simple ESB driven orchestrator to setup a PostgreSQL multi-master logical replication environment.
Type of Change