https://github.com/citusdata/citus-example-microservices

https://github.com/citusdata/citus-example-microservices

Last synced: 7 months ago
JSON representation

• Host: GitHub
• URL: https://github.com/citusdata/citus-example-microservices
• Owner: citusdata
• License: mit
• Created: 2023-06-21T16:50:40.000Z (almost 3 years ago)
• Default Branch: main
• Last Pushed: 2023-09-30T21:36:26.000Z (over 2 years ago)
• Last Synced: 2024-11-16T14:16:18.786Z (over 1 year ago)
• Language: Python
• Size: 6.84 KB
• Stars: 3
• Watchers: 8
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

          
# Citus Example: Microservices

Three microservices used to demonstrte setting up Citus as scalable storage backend for microservices.

# Citus setup

```sql

    SET citus.enable_schema_based_sharding TO ON;

    CREATE SCHEMA AUTHORIZATION user_service;

    CREATE SCHEMA AUTHORIZATION time_service;

    CREATE SCHEMA AUTHORIZATION ping_service;

```

Execute the corresponding SQL file as every service.

```bash

psql -U user_service -f user_service/user.sql

psql -U time_service -f time_service/time.sql

psql -U ping_service -f ping_service/ping.sql

```

# Connection configuration

Modify the `db_config` variable for every service in their `app.py`.

```python

db_config = {

    'host': 'localhost',

    'database': 'citus',

    'user': 'time_service',

    'port': 9700

}

```

# Running the apps

Change into every app directory and run them in their own python env.

```bash

cd user

pipenv install

pipenv shell

python app.py

```

Repeat the above for `time` and `ping` service.

# Execute some commands against the API

```bash

    # Create 10 users

    curl -X POST -H "Content-Type: application/json" -d '[

      {"name": "John Doe", "email": "john@example.com"},

      {"name": "Jane Smith", "email": "jane@example.com"},

      {"name": "Mike Johnson", "email": "mike@example.com"},

      {"name": "Emily Davis", "email": "emily@example.com"},

      {"name": "David Wilson", "email": "david@example.com"},

      {"name": "Sarah Thompson", "email": "sarah@example.com"},

      {"name": "Alex Miller", "email": "alex@example.com"},

      {"name": "Olivia Anderson", "email": "olivia@example.com"},

      {"name": "Daniel Martin", "email": "daniel@example.com"},

      {"name": "Sophia White", "email": "sophia@example.com"}

    ]' http://localhost:5000/users

    # List users

    curl http://localhost:5000/users

    # Get current time

    curl http://localhost:5001/current_time

    # Ping example.com

    curl -X POST -H "Content-Type: application/json" -d '{"host": "example.com"}' http://localhost:5002/ping

```

# LICENSE

Copyright (c) 2023, Microsoft

Licensed under the MIT license - feel free to incorporate the code in your own projects!