test to create a cassandra cluster in a docker-compose setup. so that each app can call its own clustermember. And an attempt to do cqrs en that via the cluster the updated data is distributed to the other cluster members
inspiration from here: medium
See the docker-compose.yml
Start it up:
docker-compose up
or
docker-compose -f docker-compose.yml up
Status containers: docker ps
Stats: docker stats
Get in the containers:
$ docker exec -it DSE-6_node1 bash
$ docker exec -it DSE-6_node2 bash
$ docker exec -it DSE-6_node3 bash
Status cassandra from within a container:
$ nodetool status
Describe keyspaces: cqlsh> DESC keyspaces;
Create keyspace from within a container:
$ cqlsh
cqlsh> CREATE KEYSPACE musicDb WITH replication = {'class': 'SimpleStrategy', 'replication_factor' : '3'};
Use it:
cqlsh> USE musicDb;
Create table:
cqlsh> CREATE TABLE musics_by_genre (
genre VARCHAR,
performer VARCHAR,
year INT,
title VARCHAR,
PRIMARY KEY ((genre), performer, year, title)
) WITH CLUSTERING ORDER BY (performer ASC, year DESC, title ASC);
Details table:
DESC TABLE musics_by_genre;
Put data into the table:
INSERT INTO musics_by_genre (genre, performer, year, title) VALUES ('Rock', 'Nirvana', 1991, 'Smells Like Teen Spirit');
Show data in table:
cqlsh:musicdb> SELECT * from musics_by_genre;
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