DBChaos

Stress-test your database with pre-defined queries. Validate slow and expensive queries that breaks your database.

Installation

go install github.com/adaptive-scale/dbchaos@v0.4.2

Supported Databases

Postgres
MySQL
MongoDB
SQL Server

Run your first test

Create a file named config.yaml with the following content:

dbType: postgres
connection: "host=localhost port=5432 user=postgres password=postgres dbname=postgres sslmode=disable"
query: |
  SELECT pg_database.datname as "Database", pg_size_pretty(pg_database_size(pg_database.datname)) as "Size"
  FROM pg_database;
parallelRuns: 100
runFor: 30m

For MongoDB, the connection string should be in the following format:

dbType: mongodb
connection: "mongodb://root:example@localhost:27017/"
query: |
    {"insert": "users", "documents": [{ "user": "abc123", "status": "A" }]}
parallelRuns: 100
runFor: 30m
dbName: users

To run the above config file:

dbchaos runTest

Run bunch of queries in parallel

Create a file called scenario.yaml with the following content:

dbType: mysql
connection: "root:root@tcp(host:port)/db"
scenarios:
  - query: select * from information_schema.statistics
    parallelRuns: 10000
    runFor: 15m
  - query: |
      SELECT table_schema "Database", ROUND(SUM(data_length + index_length) / 1024 / 1024, 2) "Size (MB)"
      FROM information_schema.tables
      GROUP BY table_schema;
    parallelRuns: 10000
    runFor: 15m

To run the above scenario file:

dbchaos runScenario

MongoDB Specific:

Example scenario.yaml file: