A replica set in MongoDB is a group of mongod processes that maintain the same data set. Replica sets provide redundancy and high availability and are the basis for all production deployments. Replication provides redundancy and increases data availability. With multiple copies of data on different database
Install MySQL server with Docker Compose
Inside a new directory, create a data directory and docker-compose.yml with these rows: version: ‘3’ services: db: container_name: docker-local-mysql image: mysql:5.7.21 volumes: – "./data:/var/lib/mysql" restart: always ports: – 3306:3306 environment: MYSQL_ROOT_PASSWORD: passwordversion: ‘3’ services: db: container_name: docker-local-mysql image: mysql:5.7.21