Database & Infrastructure

Cracker utilizes a robust local infrastructure managed via Docker Compose. This ensures that all necessary databases and caching services are available without manual installation.

Services Overview

The platform relies on three primary backend services:

Service	Type	Port	Usage
PostgreSQL	Relational DB	5432	Primary application data (Users, Metrics).
MongoDB	NoSQL DB	27017	Unstructured data and logs.
Redis	Key-Value Store	6379	Caching and session storage.

Access & Credentials

For local development, the following credentials are pre-configured in the docker-compose setup:

PostgreSQL

• User: postgres
• Password: postgres
• Database: postgres
• Port: 5432

MongoDB

• User: mongo
• Password: mongo
• Port: 27017

Redis

• Port: 6379
• (No default password for local dev)

Administration Tools

The project includes web-based administration tools for managing the databases. These are started automatically with yarn start:server.

pgAdmin (PostgreSQL)

• URL: http://localhost:4000
• Login Email: spope@blockchains.com
• Login Password: password

Mongo Express (MongoDB)

• URL: http://localhost:8081
• Credentials: (Check docker-compose.yml if prompted, usually admin / pass or similar defaults).

Management Commands

• Start Services: yarn start:server
• Access Postgres Shell: yarn it:db
• Access Redis CLI: yarn it:cache